Journal of Pathology and Translational Medicine

Sung Ran Hong

37 Articles

Liquid-Based Pap Smear Findings of Uterine Cervical Lymphoma: Three Cases Report.: Jiyoung Kim, Hyesun Kim, Sung Ran Hong, Yi Kyeong Chun, Hy Sook Kim; Korean J Pathol. 2011;45(4):437-440.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.4.437

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Abstract PDF: Malignant lymphoma of the uterine cervix is rarely diagnosed by cytology because it presents as a subepithelial mass. We report three cases of diffuse large B-cell lymphoma in the uterine cervix with a description of liquid-based pap smear (LBP) findings. All patients were presented with cervical masses, but a suspicion of malignant lymphoma was made in only one case by preoperative LBP. The LBP of two cases showed several atypical lymphoid cells in a clear background. The other case revealed numerous atypical lymphoid cells in a necrotic background. Most tumor cells had an increased N/C ratio, round but focally irregular nuclei, coarse chromatin, and prominent nucleoli. Nuclear blebing, dimpling, and multi-lobulation were also found. Diagnosis of malignant lymphoma by LBP is usually more difficult than by conventional techniques, because of a sparse numbers of cells and the lack of necrotic background. However, well preserved morphological features and a better resolution of nuclear details could be the benefits of LBP.

Evaluation of Low-Grade Squamous Intraepithelial Lesions, Cannot Exclude High-Grade Squamous Intraepithelial Lesions on Cervical Smear.: Sung Ran Hong, Bock Man Kim, Hye Sun Kim, Yi Kyeong Chun, Hy Sook Kim; Korean J Pathol. 2010;44(5):528-535.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.5.528

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BACKGROUND
We examined cervicovaginal smears that contained definite low-grade squamous intraepithelial lesion (LSIL) cells and rare atypical cells suggestive of high-grade SIL (HSIL) (ASC-H) or contained borderline dysplastic cells between LSIL and HSIL. Such lesions were classified as LSIL-H. This study aimed to investigate the cytologic and histologic characteristics of LSIL-H category and we evaluated the associated clinical risk.
METHODS
The histologic outcomes of LSIL-H were compared with those of LSIL and ASC-H. Both the cytologic and histologic findings of LSIL-H that were confirmed as cervical intraepithelial neoplasia 2 (CIN2) or greater (CIN2+) were investigated.
RESULTS
LSIL-H accounted for 0.09% of the Pap tests. On the follow-up histology, the most frequent outcome was CIN2, and the risk of CIN2+ was higher than that for ASC-H. In the cases of LSIL-H that was histologically confirmed as CIN2+, most of the atypical cells suggestive of HSIL were cytologically similar to those of CIN2, and the corresponding cervical tissues were characterized by small CIN2+ lesions in a large background of flat condyloma/CIN1. The LSIL-H cases not confirmed on initial colposcopically-directed biopsy required further follow-up.
CONCLUSIONS
LSIL-H may be a valid diagnostic category with distinctive features that are different from LSIL or ASC-H. LSIL-H needs further follow-up for the proper management.

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The Clinical Significance of “Squamous Intraepithelial Lesion of Indeterminate Grade” as a Distinct Cytologic Category
Dorothy Wong, Crystal Teschendorf, Grace Y. Lin, Farnaz Hasteh
American Journal of Clinical Pathology.2012; 137(5): 753. CrossRef

Histologic Correlation of Atypical Glandular Cells in Cervical Smears.: Yi Kyeong Chun, Sung Ran Hong, Hye Sun Kim, Ji Young Kim, Hy Sook Kim; Korean J Pathol. 2009;43(5):453-457.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.5.453

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Abstract PDF

BACKGROUND
The study evaluated the histologic correlation and clinical significance of atypical glandular cells (AGC) detected either on conventional smears (CS) or liquid-based cytology (LBC).
METHODS
Two hundred and seventy-seven (0.11%) of 261,925 cervical smears were interpreted as AGC by the Bethesda system 2001 from January 2006 to December 2008. Cytohistological correlation was performed on 192 cases.
RESULTS
The prevalence of AGC was 0.07% and 0.13% for CS and LBC smears, respectively. Distribution of AGC subcategories were as follows: atypical endometrial cells 53.8%, atypical endocervical cells 22.7%, atypical glandular cells 19.5%, atypical endocervical cells favoring neoplasia 2.2%, and atypical glandular cells favoring neoplasia 1.8%. Fifty-nine (27.4%) of 192 patients were confirmed as having clinically significant lesions comprising endometrial adenocarcinoma (12.5%), endometrial hyperplasia (6.0%), cervical adenocarcinoma (2.3%), high-grade squamous intraepithelial lesion (HSIL) (1.9%), low-grade SIL (1.9%), adenocarcinoma in situ (1.4%), or ovarian metastasis (1.4%).
Conclusion
Compared with CS, LBC was presently associated with a higher prevalence of AGC. Histologic follow-up showed a very low HSIL rate compared to other studies. Endometrial adenocarcinoma was the most common malignant lesion detected because of increasing prevalence of endometrial adenocarcinoma, concentration on endometrial cytology, and introduction of LBC.

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4 Cases of Traditional Korean Medicine Treatment for Patients with Surgical Margin Positive after LEEP in Cervical Intraepithelial Neoplasia
Eun Lee, Kyung-yeob Lee, Byung-kook Yu
Journal of Physiology & Pathology in Korean Medicine.2020; 34(3): 149. CrossRef
Histologic Correlation and Clinical Significance of Atypical Glandular Cells on Cervical Pap Tests: Analysis of 540 Cases at a Single Institution
Tae-Kyu Jang, Jeong-Yeol Park, Dae-Yeon Kim, Dae-Shik Suh, Jong-Hyeok Kim, Yong-Man Kim, Young-Tak Kim, Joo-Hyun Nam
Cancer Investigation.2019; 37(1): 8. CrossRef
Clinicopathological significance of atypical glandular cells on cervicovaginal Pap smears
Mi‐Kyung Kim, Yoo Kyung Lee, Sung Ran Hong, Kyung Taek Lim
Diagnostic Cytopathology.2017; 45(10): 867. CrossRef

Prevalence and Genotype Distribution of Cervical Human Papillomavirus DNA in Korean Women: A Multicenter Study.: Sung Ran Hong, In Sun Kim, Dong Won Kim, Mi Jin Kim, Ae Ree Kim, Young Ok Kim, Hye Sun Kim, Seo Hee Rha, Gyeong Sin Park, Yong Koo Park, Yong Wook Park, Ho Sung Park, Kwang Sun Suh, Jin Hee Sohn, Mi Kyung Shin, Hoon Kyu Oh, Ki Jung Yun, Hye Kyoung Yoon, Shi Nae Lee, Ah Won Lee, Hyo Jin Lee, Hyun Yee Cho, Chan Choi, Woon Won Jung; Korean J Pathol. 2009;43(4):342-350.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.4.342

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Abstract PDF

Background
DNA prevalence and type distribution of human papillomavirus (HPV) varies geographically. We investigated HPV prevalence and type distribution in Korean women using the MyHPV DNA chip testing. Methods: A total of 2,368 women from five regions of the country underwent Pap smear examination and MyHPV chip testing. Results: Overall HPV positivity was 15.8% and 78.4% in women with normal and abnormal cytology, respectively. High-risk HPV infection was strongly correlated with cytological atypia. In women with abnormal cytology, the five most common HPV types were 16, 58, 18, 52, and 56/53, and HPV16 was significantly the most common type in most geographical regions. After HPV16, HPV58, and 52 were the next most frequently detected types. Women with normal cytology, in contrast, showed heterogeneity in HPV type distribution. High-grade intraepithelial lesions infected with HPV16, 18, 31 or 45 are more likely to progress to carcinoma. Conclusions: The HPV chip test can provide useful data regarding HPV positivity and type. The most common HPV type in Korean women with abnormal cytology is HPV16, with HPV58 and 52 being frequently present. Our data may have important implications for vaccination programs and the development of cervical screening.

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HPV genotyping by L1 amplicon sequencing of archived invasive cervical cancer samples: a pilot study
Charles D. Warden, Preetam Cholli, Hanjun Qin, Chao Guo, Yafan Wang, Chetan Kancharla, Angelique M. Russell, Sylvana Salvatierra, Lorraine Z. Mutsvunguma, Kerin K. Higa, Xiwei Wu, Sharon Wilczynski, Raju Pillai, Javier Gordon Ogembo
Infectious Agents and Cancer.2022;[Epub] CrossRef
Enhanced disease progression due to persistent HPV-16/58 infections in Korean women: a systematic review and the Korea HPV cohort study
Jaehyun Seong, Sangmi Ryou, JeongGyu Lee, Myeongsu Yoo, Sooyoung Hur, Byeong-Sun Choi
Virology Journal.2021;[Epub] CrossRef
Comparison of FFPE histological versus LBP cytological samples for HPV detection and typing in cervical cancer
Geehyuk Kim, Hyemi Cho, Dongsup Lee, Sunyoung Park, Jiyoung Lee, Hye-young Wang, Sunghyun Kim, Kwang Hwa Park, Hyeyoung Lee
Experimental and Molecular Pathology.2017; 102(2): 321. CrossRef
Distribution of Oncogenic Human Papillomavirus Genotypes at High Grade Cervical Lesions above CIN 2 Grade with Histological Diagnosis
Geehyuk Kim, Sungyoung Park, Hye-young Wang, Sunghyun Kim, Sangjung Park, Kwangmin Yu, Boohyung Lee, Seung-Ju Ahn, Eun-Joong Kim, Dongsup Lee
Biomedical Science Letters.2016; 22(2): 37. CrossRef
Human Papillomavirus Prevalence and Genotype Distribution in Normal and ASCUS Specimens: Comparison of a Reverse Blot Hybridization Assay with a DNA Chip Test
Sunghyun Kim, In-soo Lee, Dongsup Lee
Biomedical Science Letters.2015; 21(1): 32. CrossRef
Genotype Analysis of Human Papilloma Virus Infection in Accordance with Cytological Diagnoses
Mi-Suk Park, Hyun-Wook Cho, Jin-Gak Kim, Nan-Young Bae, Dong-Sun Oh, Ho-Hyun Park
Korean Journal of Clinical Laboratory Science.2015; 47(1): 39. CrossRef
Comparison of the Cobas 4800 HPV and HPV 9G DNA Chip Tests for Detection of High-Risk Human Papillomavirus in Cervical Specimens of Women with Consecutive Positive HPV Tests But Negative Pap Smears
Sun-Young Jun, Eun Su Park, Jiyoung Kim, Jun Kang, Jae Jun Lee, Yoonjin Bae, Sang-Il Kim, Lee-So Maeng, Magdalena Grce
PLOS ONE.2015; 10(10): e0140336. CrossRef
Uncommon and Rare Human Papillomavirus Genotypes Relating to Cervical Carcinomas
Na Rae Kim, Myunghee Kang, Soon Pyo Lee, Hyunchul Kim, Jungsuk An, Dong Hae Chung, Seung Yeon Ha, Hyun Yee Cho
Korean Journal of Pathology.2014; 48(1): 43. CrossRef
Evaluation of Human Papillomavirus Genotyping from Formalin-fixed Paraffin-embedded Specimens in Cervical Cancers
Hyunwoo Jin
Journal of Life Science.2014; 24(9): 1025. CrossRef
Comparative Evaluation of the HPV28 Detection and HPV DNA Chip Test for Detecting and Genotyping Human Papillomaviruses
Eunsim Shin, Heojin Bae, Wan-Keun Song, Sun-Kyung Jung, Yoo-Sung Hwang
Laboratory Medicine Online.2013; 3(4): 234. CrossRef
Significance of HPV-58 Infection in Women Who Are HPV-Positive, Cytology-Negative and Living in a Country with a High Prevalence of HPV-58 Infection
Joon Seon Song, Eun Ju Kim, Jene Choi, Gyungyub Gong, Chang Ohk Sung, Robert D. Burk
PLoS ONE.2013; 8(3): e58678. CrossRef
REBA HPV‐ID® for efficient genotyping of human papillomavirus in clinical samples from Korean patients
Sunghyun Kim, Dongsup Lee, Sangjung Park, Tae Ue Kim, Bo‐Young Jeon, Kwang Hwa Park, Hyeyoung Lee
Journal of Medical Virology.2012; 84(8): 1248. CrossRef
Dynamin 2 expression as a biomarker in grading of cervical intraepithelial neoplasia
Yoo-Young Lee, Sang Yong Song, In-Gu Do, Tae-Joong Kim, Byoung-Gie Kim, Jeong-Won Lee, Duk-Soo Bae
European Journal of Obstetrics & Gynecology and Reproductive Biology.2012; 164(2): 180. CrossRef
Cytomorphologic Features According to HPV DNA Type in Histologically Proven Cases of the Uterine Cervix
In Ho Choi, So-Young Jin, Dong Wha Lee, Dong Won Kim, Yoon Mi Jeen
The Korean Journal of Pathology.2011; 45(6): 612. CrossRef
Human Papillomavirus Prevalence in Gangwon Province Using Reverse Blot Hybridization Assay
Dongsup Lee, Sunghyun Kim, Sangjung Park, Hyunwoo Jin, Tae Ue Kim, Kwang Hwa Park, Hyeyoung Lee
The Korean Journal of Pathology.2011; 45(4): 348. CrossRef
Pediatric vulvar squamous cell carcinoma in a liver transplantation recipient: a case report
Na-Rae Kim, Soyi Lim, Hyun Yee Cho
Journal of Gynecologic Oncology.2011; 22(3): 207. CrossRef

Cytology of Synovial Fluid in Gouty Arthritis: Two Cases Report.: Ji Young Kim, Yi Kyeong Chun, Hoi Sook Jang, Bok Man Kim, Hy Sook Kim, Jae Yong An, Sung Ran Hong; Korean J Pathol. 2009;43(1):92-97.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.1.92

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Abstract PDF

Synovial fluid (SF) aspiration cytology is a useful diagnostic tool. For patients with gouty arthritis, the diagnosis is confirmed by the presence of monosodium uric acid (MSU) crystals in the SF, and these crystals are long, pointed ended and needle-shaped and they show strongly negative birefringence. Sometimes, it is difficult to diagnosis between gouty arthritis and other type of inflammatory arthritis. We experienced two unusual cases of gouty arthritis that we performed SF analysis for. The first patient was a 35 year old male who presented with relatively typical clinical symptoms with hyperuricemia, but the SF showed acute inflammatory cells without crystals on light microscopy. Only a few suspected crystals of MSU were identified on polarizing microscopy. The second patient was a 45 year old male who presented with atypical symptoms and pain and swelling of the left ankle and knee joint for 3 weeks. The uric acid level in the serum and urine was increased, but not over the normal limit. However, on light and polarizing microscopy, there were numerous MSU crystals in the SF. Conclusively, in some cases of gouty arthritis, the crystals are not identified on light microscopy or the uric acid level is not dramatically increased. So, the polarizing microscopy, the clinical information and the laboratory findings are all included in the work-up when evaluating the SF cytology of arthritis patients.

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Diagnostic indications of knee joint fluid – current state ofknowledge
Damian Turzański
Diagnostyka Laboratoryjna.2023; 59(4): 1. CrossRef

A Multiinstitutional Consensus Study on the Pathologic Diagnosis of Endometrial Hyperplasia and Carcinoma.: Kwang Sun Suh, Insun Kim, Moon Hyang Park, Geung Hwan Ahn, Jin Hee Sohn, In Ae Park, Hye Kyoung Yoon, Kyu Rae Kim, Hee Jung An, Dong Won Kim, Mi Jin Kim, Hee Jae Joo, Eun Kyung Kim, Young Hee Choi, Chong Woo Yoo, Kyung Un Choi, Sang Yeop Yi, Hye Sun Kim, Sung Ran Hong, Hee Jeong Lee, Sun Lee; Korean J Pathol. 2008;42(2):87-93.

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Abstract PDF: BACKGROUND
The purpose of this study was to examine the reproducibility of both the diagnosis of endometrial hyperplasia (EH) or adenocarcinoma, and the histologic grading (HG) of endometrioid adenocarcinoma (EC).
METHODS
Ninety-three cases of EH or adenocarcinomas were reviewed independently by 21 pathologists of the Gynecologic Pathology Study Group. A consensus diagnosis was defined as agreement among more than two thirds of the 21 pathologists.
RESULTS
There was no agreement on the diagnosis in 13 cases (14.0%). According to the consensus review, six of the 11 EH cases (54.5%) were diagnosed as EH, 48 of the 57 EC cases (84.2%) were EC, and 5 of the 6 serous carcinomas (SC) (83.3%) were SC. There was no consensus for the 6 atypical EH (AEH) cases. On the HG of EC, there was no agreement in 2 cases (3.5%). According to the consensus review, 30 of the 33 G1 cases (90.9%) were G1, 11 of the 18 G2 cases (61.1%) were G2, and 4 of the 4 G3 cases (100.0%) were G3.
CONCLUSIONS
The consensus study showed high agreement for both EC and SC, but there was no consensus for AEH. The reproducibility for the HG of G2 was poor. We suggest that simplification of the classification of EH and a two-tiered grading system for EC will be necessary.

Cytologic Findings of Malakoplakia of the Uterine Cervix and the Vagina: A Case Report.: Yi Kyeong Chun, Sung Ran Hong, Hye Sun Kim, Ji Young Kim, Bok Man Kim, Hy Sook Kim; Korean J Cytopathol. 2008;19(2):164-167.; DOI: https://doi.org/10.3338/kjc.2008.19.2.164

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Abstract PDF: Malakoplakia is an uncommon chronic granulomatous inflammation that usually involves the urinary and gastrointestinal tracts, but rarely affects the female genital tract. We experienced a case of malakoplakia in a cervicovaginal smear in a 54-year-old woman. Colposcopic examination showed a friable, easily bleeding tissue in the uterine cervix and the vaginal fornix. The cervicovaginal smear consisted of numerous isolated histiocytes, polymorphonuclear leukocytes, lymphocytes, and plasma cells. The histiocytes had an abundant, granular, and degenerated cytoplasm with inflammatory cell debris. Michaelis-Gutmann bodies were readily identified.

Telomerase activity and Expression of MIB-1, Fas and Fas Ligand in Placentas from Women with and without Intrauterine Growth Retardation.: Yi Kyeong Chun, Sung Ran Hong, Moon Ho Yang; Korean J Pathol. 2005;39(1):34-40.

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Abstract PDF: BACKGROUND
The placenta from a pregnancy that is complicated by intrauterine growth retardation (IUGR) tends to be smaller than that from a normal pregnancy. To investigate this difference, we analyzed the telomerase activity, the proliferative activity and the mRNA levels of apoptosis mediators in placentas.
METHODS
In 20 placentas from normal third-trimester pregnancies and 22 placentas form pregnancies that were complicated by IUGR, the telomerase activity was detected by a telomeric repeat amplification protocol assay. The proliferative activity was assessed by immunohistochemical staining using the MIB-1 monoclonal antibody. The expression of the apoptosis mediator was evaluated by semi-quantitative reverse transcription-polymerase chain reactions for fas and fas ligand.
RESULTS
Telomerase activity was detected in 2 (10%) of 20 normal placentas, whereas it was not observed in all tested 13 placentas that were associated with IUGR. The proliferative activity was significantly low in the placentas that were associated with IUGR (7.44+/-2.96%), compared with the normal placentas (11.0+/-3.48%, p=0.002). There was no statistically significant difference in the mRNA levels of fas or fas ligand between two groups.
CONCLUSIONS
Low telomerase and proliferative activities in the placenta may play a role in the pathogenesis of IUGR.

Primary Carcinoid Tumor of the Uterine Corpus: A Case Report.: Sung Ran Hong, Hy Sook Kim, Jae Uk Shim; Korean J Pathol. 2004;38(2):109-112.

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Abstract PDF: Carcinoid tumors of the female genital tract are an uncommon clinical finding. This study presents a case of typical carcinoid tumor of the uterine corpus in a 61-year-old woman. The tumor was a primary carcinoid tumor arising from the endometrium which showed the typical organoid patterns with a positive reaction for neuroendocrine markers. The patient was treated by a total hysterectomy and bilateral salpingo-oophorectomy. No evidence for the carcinoid syndrome was noted. The carcinoid tumor recurred as a vaginal mass approximately six and a half years later. The patient died from a mechanical intestinal obstruction by the carcinoid tumor with distant metastasis approximately eight and a half years after operation of the endometrial primary tumor.

Correlation Of Human Papillomavirus Infection and Postmenopausal Squamous Atypia in Cervical Cytology.: Yi Kyeong Chun, In Gul Moon, Sung Ran Hong, Hye Sun Kim, Jong Sun Choi, Ji Young Park, Jong Sook Park, Tae Jin Kim, Hy Sook Kim; Korean J Cytopathol. 2004;15(2):81-85.

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Abstract PDF: Postmenopausal squamous atypia (PSA) is a phenomenon characterized by cellular alterations mimicking condyloma in the uterine cervix of postmenopausal women. It is not associated with human papillomavirus (HPV) infection. The aim of this study is to correlate findings with HPV infection and the cytohistologic findings of PSA. Eighty-three smears from postmenopausal women, initially interpreted as ASCUS and low-grade squamous intraepithelial lesions(LSIL), were reviewed according to the criteria of PSA. Fifty-eight cases were subsequently reclassified as PSA. Forty cases categorized as PSA were available for HPV-DNA detection by a nested polymerase chain reaction. Eight of these 40 cases(20%) showed biopsy-proven LSIL lesions. The HPV-DNA was detected in 42.5%(17/40), compared to 25%(5/20) of control cases. The HPV-DNA detection rate of biopsy-proven LSIL was 62.5%(5/8). It has been concluded that cytologic differential diagnosis of PSA from LSIL is difficult due to because of poor histologic and viral correlation.

Pregnancy-Related Cytologic Changes In Cervicovaginal Smears.: Yi Kyeong Chun, Hoi Sook Jang, Hye Sun Kim, Sung Ran Hong, Jong Sun Choi, Ji Young Park, Jung Sook Cho, Seok Ju Seong, Jae Hyug Yang, Hy Sook Kim; Korean J Cytopathol. 2004;15(2):92-100.

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Abstract PDF: Due to insufficient clinical information, most cervicovaginal smears from pregnant or postpartum women have been screened without regard to pregnancy-related cytological changes. Here, we have reviewed 116 abnormal cervicovaginal smears from 103 pregnant and postpartum women. Initial cytological diagnoses revealed the following: 9 cases of high-grade squamous intraepithelial lesions (HSIL), 8 cases of low-grade squamous intraepithelial lesions (LSIL), 85 cases of atypical squamous cells of undetermined significance (ASCUS), and 14 cases involving atypical glandular cells of undetermined significance (AGUS). 31 cases, upon review, involved pregnancy-related cytological changes, comprising 25 cases of decidua cells, 4 cases of Arias-Stella reaction, and 2 cases of decidual cells coupled with Arias-Stella reaction. Interpretation errors were detected in 14 cases: 13 cases of decidual cells interpreted as either ASCUS favor reactive or ASCUS ruled out HSIL, and one case of Arias-Stella reaction was interpreted as ASCUS ruled out HSIL. Decidual cells and degenerated glandular cells with Arias-Stella reaction can result in diagnostic mistakes. In order to avoid misdiagnosis and unnecessary surgeries, both clinicians and pathologists must be aware of the pregnancy-related cytological changes. The clinician should also always inform the pathologist on the pregnancy status of the patient.

Correlation of Cytology and Pathology in HPV Infection.: Sung Ran Hong; Korean J Cytopathol. 2004;15(1):11-16.

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Abstract PDF: No abstract available.

Sensitivity of AutoPap Primary Screening System with Location-Guided Screening in Uterine Cervical Cytology.: Jong Sun Choi, Hoi Sook Jang, Hy Sook Kim, Yi Kyeong Chun, Hye Sun Kim, Ji Young Park, In Sou Park, Sung Ran Hong; Korean J Cytopathol. 2003;14(2):60-65.

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Abstract PDF: OBJECTIVE: The sensitivity of the AutoPap Primary Screening System with Location-Guided Screening (AutoPap LGS) for identifying atypical cells in cervicovaginal smears was evaluated. METHODS: Two hundred forty one slides with atypical cervical cytology randomly sampled were rescreened both manually and by the AutoPap LGS. The AutoPap LGS localized the atypical cells as 15 fields of view(FOVs), which were reexamined by manual review. The sensitivity was also evaluated in accordance with the cellularity of the smears. RESULTS: The AutoPap LGS successfully processed 232 out of 241 slides. The sensitivity of the AutoPap LGS identifying the atypical cells in successfully processed slides was 97.4%(226/232). The false negative rate was 2.6%(6/232). There was no false negative case in high grade squamous intraepithelial lesion (HSIL) or squamous cell carcinoma(SCC) smears in the AutoPap LGS. The FOVs localized the diagnostic-atypical cells in 97.8%(221/226). The number of diagnostic-atypical FOVs was increased in higher-degree of atypical cytology. The AutoPap LGS localized the atypical cells in 100% of adequately cellular smears and in 92.5% even in low cellular smears. CONCLUSION: The AutoPap LGS showed relatively good sensitivity to detect atypical cells. It can be a valuable system to localize atypical cells, especially in HSIL or cancer slides, even in smears with low cellularity.

Usefulness of Frozen Section Examination of Core Needle Biopsy in the Breast Carcinoma.: Yee Jeong Kim, Yi Kyeong Chun, Sung Ran Hong, Hy Sook Kim, Sung Su Kang, Ji Hyun Lee, Sung Kong Lee, Hye Sun Kim; Korean J Pathol. 2002;36(3):163-166.

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Abstract PDF: BACKGROUND
Core needle biopsy (CNB) is widely used as the initial sampling method for breast cancer. And because frozen section (FS) diagnosis is rapid and reliable, we studied the diagnostic agreement between the diagnosis of FS of CNB and final diagnosis after surgery to evaluate the diagnostic accuracy of the FS of CNB.
METHODS
Of 409 patients who were preoperatively diagnosed by FS of CNB and who underwent final surgery from 1996 through 2000, 24 cases were found to be ductal carcinoma in situ (DCIS) and 385 cases invasive carcinoma (IC). The diagnoses of FS of CNB were compared with final diagnoses.
RESULTS
The diagnostic accuracy of carcinoma is 63.6% for DCIS and 86.9% for invasive carcinoma. Five cases (1.2%) could not be diagnosed because of material insufficiency for diagnosis. Twenty two cases (5.4%) were diagnosed as benign on FS, among which 20 (90.9%) were misdiagnosed by sampling error. Twenty seven cases (6.7%) were deferred on FS, 4 of these cases were DCIS, 5 were invasive lobular carcinoma (ILC), the rest displayed low nuclear grades or marked freezing artifacts.
CONCLUSIONS
The diagnostic accuracy of FS of CNB is very high except for cases of ILC and low grade DCIS. Considering the advantage of rapid evaluation, more definitive diagnosis, familiarity by pathologists and availability of ancillary study, FS of CNB is very useful method as the preoperative evaluation.

Placental Pathology in Intrauterine Growth Retardation.: So Young Park, Moon Young Kim, Yee Jeong Kim, Yi Kyeong Chun, Hye Sun Kim, Hee Soo Kim, Sung Ran Hong; Korean J Pathol. 2002;36(1):30-37.

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Abstract PDF: BACKGROUND
Histologic examination of the placentas from intrauterine growth retardation (IUGR) fetuses can supplement clinical knowledge of the cause of IUGR. The present study was undertaken to observe the pathologic findings regarding the placentas in IUGR fetuses.
METHODS
Clinicopathologic findings in 45 cases with IUGR at the third-trimester were reviewed, and they were compared with those of 24 normal control cases. An IUGR fetus was defined as one with a birth weight less than those in the 10th percentile. Of the IUGR cases, 15 were hypertensive IUGR with or without preeclampsia, and 30 were normotensive IUGR.
RESULTS
The IUGR groups had significantly shorter mean gestational ages, lower mean placental weights, and higher incidences of oligohydramnios, compared to the normal controls (p<0.05). Histologically, IUGR was characterized by increased incidence of decidual vasculopathy (31.1%, p<0.05), multiple and severe infarct (p<0.05), villous fibrosis (31.1%, p<0.05), syncytiotrophoblastic knots (86.7%, p<0.05), and higher degree of increased perivillous fibrin deposition (p<0.05). However, there were no statistically significant differences in the placental lesions between hypertensive and normotensive IUGR cases, except for the presence of decidual vasculopathy.
CONCLUSIONS
Abnormal uteroplacental vasculature and chronic uteroplacental insufficiency, coagulation-related pathology in the uteroplacental, intervillous and/or fetoplacental vasculature, and chronic inflammatory lesions may be the primary disease processes related to the placental pathology of IUGR. Although the cause of IUGR pregnancies is heterogeneous, careful cilinicopathologic correlations in individual cases are necessary in the interpretation of placental lesions of IUGR, and the total burden of several placental lesions may be more important than a single histologic feature.

Immunolocalization of the Apoptotic Inhibiting Protein (bcl-2) in Early Normal Pregnancy and Abortion.: Jiae Lee, Jeong Wook Kim, Bum Chae Choi, Kwang Moon Yang, Young Youl Cho, Sung Ran Hong; Korean J Pathol. 2001;35(1):48-52.

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Abstract PDF: BACKGROUND
The human placenta is an important organ in the maintenance of pregnancy, having functions in maturation and differentiation until the end of pregnancy. The bcl-2 protein is a proto-oncogene that prevents apoptosis and maintains cell survival. However, the mechanism through which bcl-2 inhibits apoptosis is unclear. The aims of this study are to localize bcl-2 at the placenta and to determine whether the expression of bcl-2 in early normal pregnancy is different from that of a missed abortion.
METHODS
Immunohistochemistry was performed for bcl-2 in formalin-fixed chorionic villi and decidual tissue collected from five early normal pregnancies and eleven missed abortions having histories of recurrent abortions during the first trimester.
RESULTS
The bcl-2 protein was observed in the syncytiotrophoblasts of chorionic villi and decidua in both the normal pregnancy and the missed abortion, and the expression of bcl-2 significantly increased in the missed abortion group (p<0.05).
CONCLUSION
The bcl-2 may be necessary to maintain pregnancy through modulating the survival of the syncytiotrophoblast and decidua without affecting cell proliferation, and the increased bcl-2 expression is presumed to be a reparative process to the increased apoptotic activity.

Telomerase Activity and Expression of MIB-1 and bcl-2 in Human Chorionic Villi from Early and Term Normal Pregnancy.: Jung Sook Cho, Young Soon Kang, In Gul Moon, Bum Chae Choi, Jong Pyo Lee, Hoon Taek Lee, Sung Ran Hong; Korean J Pathol. 2000;34(11):927-933.

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Abstract PDF: Telomerase is an enzyme that maintains telomeres and prevents telomere shortening, and may be linked with cellular proliferation or the aging process. The purpose was to examine telomerase activity in human chorionic villi from early and term normal pregnancies, and to analyze the correlation of telomerase activity (TA) with MIB-1 & bcl-2. A total of 37 placentae were obtained from 16 early and 21 term pregnancies. TA was assayed by telomeric repeat amplification protocol, and immunohistochemical staining was performed for MIB-1 & bcl-2 expression. TA & MIB-1 expression were strong in early placenta, but bcl-2 was highly expressed in term placentae. Thirteen (81.25%) of 16 early placentae showed TA, but only 2 (9.52%) of 21 term placentae expressed TA (p<0.01). MIB-1 was observed in nuclei of cytotrophoblast, and the expression rate was 16.09% in early placentae and 2.87% in term placentae (p<0.01). bcl-2 was observed only in the cytoplasm of syncytiotrophoblast. Term placenta demonstrated stronger expression of bcl-2 compared to early placentae (p<0.05). These findings suggest that TA, MIB-1 & bcl-2 expression are critically regulated over the course of gestation: cytotrophoblast, main cells of early chorionic villi, may be a common source of telomerase and proliferative activity. The TA showed good correlation with cellular proliferative activity. Syncytiotrophoblast, may be a main source of bcl-2 expression which is stronger in the term placentae.

Expression of p53 Protein and Ki-67 in Atypical Ductal Hyperplasia, Ductal Carcinoma in Situ, and Microinvasive Ductal Carcinoma of the Breast.: Yi Kyeong Chun, Hye Sun Kim, Yee Jeong Kim, Sung Ran Hong, Hy Sook Kim, Byung Jun Park, Sung Su Kang, Ji Hyun Lee, Sung Kong Lee, Sun Hee Sung, Woon Sup Han; Korean J Pathol. 2000;34(9):665-672.

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Abstract PDF: Mutation of the p53 gene is one of the most common genetic alterations in invasive breast carcinoma. However, it is unclear that the mutation usually occurs in noninvasive breast lesions. It might be expected that there is a correlation between histologic progression of breast lesions and proliferative rate. We investigated the expression of p53 protein and Ki-67 labelling index (LI) using immunohistochemistry in 16 ductal carcinoma in situ with microinvasion (DCIS-Mi), 56 DCIS, 15 atypical ductal hyperplasia (ADH), and 7 intraductal hyperplasia (IDH). Expression of p53 protein was detected in 33.9% of DCIS and 56.3% of DCIS-Mi and was confined exclusively in Van Nuys DCIS group 2 and 3. In ADH and IDH, no expression of p53 protein was found. There was no significant correlation between Van Nuys DCIS groups and Ki-67 LI. In conclusion, p53 mutation may be involved in the neoplastic progression from ADH to DCIS and is directly related to high nuclear grade and associated necrosis of DCIS.

Complete Hydatidiform Mole with a Coexisting Fetus: A case report .: Yi Kyeong Chun, Hye Sun Kim, Yee Jeong Kim, Hy Sook Kim, Soo Kyung Choi, So Yeon Park, Sung Ran Hong; Korean J Pathol. 2000;34(9):673-676.

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Abstract PDF: Twin conceptus of a complete hydatidiform mole (CHM) and a normal fetus are rare but are important because of diagnostic difficulty, problems related to twin pregnancy, and high risk of persistent gestational trophoblastic tumor. Recently, we experienced one case of twin pregnancy consisting of a CHM and a normal fetus. A 26-year-old woman complained of vaginal bleeding. She had evidences of pregnancy-induced hypertension. A male fetus was delivered at 20 gestational weeks. The placenta demonstrated vesicles of molar change separated from normal placenta. Microscopically, the molar villi disclosed diffuse hydropic swelling with circumferential trophoblastic proliferation. DNA flow cytometric analysis showed diploid patterns in both molar and normal placental tissues. Fluorescent in situ hybridization in paraffin-embedded tissue presented that normal placental villi hybridized with X- and Y-chromosome probes (46, XY), while molar villi hybridized with X-chromosome only (46, XX). Thus, dizygotic twinning was confirmed because sex differences were shown between molar villi and normal placental villi. Follow up beta-hCG was within normal range after delivery.

Cytologic Features of Endometrial Hyperplasia: Comparison with Normal Endometrium and Endometrial Adenocarcinoma.: Sung Ran Hong, Mee Im Seon, Yee Jeong Kim, Yi Kyeong Chun, Hye Sun Kim, Hy Sook Kim; Korean J Cytopathol. 2000;11(1):1-10.

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Abstract PDF: The purpose of this study is to describe the cellular characteristics of endometrial hyperplasia without/with atypia in cervical smears. These cellular features were compared with those of normal endometrium and endometrial carcinoma. We reviewed 265 cervical smears : 64 normal proliferative endometrium, 118 endometrial hyperplasia without atypia, 21 endometrial hyperplasia with atypia, and 62 endometrial adenocarcinoma. Of these smears, 72(27.2%) smears which had diagnostic endometrial epithelial cells were selected for this study. The cytologic abnormalities about cellularity, background, changes in cellular architecture, alterations in nuclear size, anisokaryosis, chromatin pattern, nucleoli, cytoplasmic vacuoles, and mitosis were observed. Nuclear enlargement(1.6 to 2 times of the nucleus in the intermediate squamous cell) and anisokaryosis(> OR =2 fold in size variation) were highly suggestive of endometrial hyperplasia without/with atypia. The nuclei from endometrial hyperplasia with atypia were more coarsely granular in chromatin patterns than hyperplasia without atypia(33.3% vs 3.4%). Micronucleoli were observed in all endometrial conditions, but the presence of macronucleoli were more suggestive of hyperplasia with atypia(22.2%) and adenocarcinoma(55%). The changes in cellular architecture(loss of polarity, uneven internuclear distance, overlapping and loose

Ductal Carcinoma In Situ of the Breast: Comparison of Histologic Classifications and Correlation with Histologic Grade of Coexisting Invasive Ductal Carcinoma.: Sung Ran Hong, Yee Jeong Kim, Yi Kyeong Chun, Hye Sun Kim, Hy Sook Kim; Korean J Pathol. 1999;33(6):434-442.

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Abstract PDF: Recently developed new classifications (Holland, Van Nuys, modified Lagios) of ductal carcinoma in situ (DCIS) linked to outcome have emphasized the importance of nuclear morphology rather than architecture. We have evaluated these three classifications in ductal carcinomas composed of in situ and invasive carcinomas. The reproducibility of three classifications was assessed (n=49), and the histological grade of the DCIS was compared with the histologic differentiation (modified Bloom & Richardson method) and nuclear grade (modified Black method) of the coexisting invasive ductal carcinoma (n=45). According to Holland classification, the DCIS component was poorly differentiated in 51.0%, intermediately differentiated in 40.8%, and well differentiated in 8.2%. Using the Van Nuys classification, the DCIS component was group 3 (high grade with or without necrosis) in 44.9%, group 2 (non-high grade with necrosis) in 28.6%, and group 1 (non-high grade without necrosis) in 26.5%. According to the modified Lagios classification, the DCIS component was high-grade in 42.8%, intermediate-grade in 32.7%, and low-grade in 24.5%. The histologic grades of the three classifications revealed significant correlations between Holland and Van Nuys classification (p<0.0001) and between Holland and modified Lagios classification (p<0.0001), especially in poorly differentiated/group 3/high-grade DCIS. The reproducibility of classification of the DCIS was 71.4% in the Holland, 61.2% in the Van Nuys, and 55.1% in the modified Lagios classifications. The grade of the DCIS showed significant correlation with the grade of coexisting invasive ductal carcinoma (p<0.0001), especially in poorly differentiated/group 3/high-grade DCIS. In conclusion, DCIS grade, determined by the Holland, Van Nuys or modified Lagios classifications, is closely correlated with the histologic grade of the invasive ductal component in tumors composed of in situ and invasive ductal carcinoma, and may be a useful factor to estimate clinical behavior of DCIS. In our experience the Holland classification is recommended for DCIS classification due to its high reproducibility.

Pseudoangiomatous Stromal Hyperplasia of the Breast A clinicopathological study of 8 cases.: Hye Sun Kim, Yi Kyeong Chun, Yee Jung Kim, Sung Ran Hong, Hy Sook Kim; Korean J Pathol. 1999;33(3):193-198.

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Abstract PDF: Pseudoangiomatous stromal hyperplasia (PASH) of the breast occurs in premenopausal women and is characterized by anastomosing channels lined by spindle cells. It has been suggested to be of hormonal origin. This unusual condition may also be mistaken for a vascular tumor. We analyzed eight cases of PASH of the breast in Samsung Cheil Hospital from 1992 through 1998. All patients were premenopausal and had painless breast lump. Clinical diagnoses were fibroadenomas. Grossly, the masses were well circumscribed, nonhemorrhagic and measure 2.2 to 5 cm. Histologically, they consisted of complex interanastomosing channels lined by slender spindle cells, which resembled low grade angiosarcoma. Cells that line the interanastomosing channels showed no immunoreactivity for Factor VIII and electron microscopic findings consistent with fibroblast. All patients were treated with surgical excision and none of them had recurrence for 1 to 69 months (mean: 19 months) postoperatively. Pathologic diagnosis of PASH may be difficult unless the pathologists are aware of the presence of a mass lesion and appreciate the characteristic stromal changes. PASH should be included in the differential diagnosis of a circumscribed mass, especially in the premenopausal women.

Osteochondrodysplasia Pathologic study of 29 autopsy cases.: Yi Kyeong Chun, Yee Jeong Kim, Sung Ran Hong, Min Suk Kim, Je G Chi; Korean J Pathol. 1999;33(1):32-41.

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Abstract PDF: Osteochondrodysplasia is a heterogeneous group of disorders appearing short limbed dwarfism. Because many of these entities are lethal and hereditary, an accurate diagnosis is mandatory. The purpose of this study is to define the clinicopathologic features and radiologic findings of osteochondrodysplasia. We reviewed 29 autopsy cases of congenital short limbed dwarfism, consisting of thanatophoric dysplasia (TD) (12 cases), osteogenesis imperfecta (OI) (12 cases), asphyxiating thoracic dysplasia (ATD) (3 cases), short-rib-polydactyly syndrome (SRPS) (1 case) and hypochondrogenesis (1 case). The gestational age ranged from 16 to 41 weeks. Of 6 fetuses that were born alive, 3 were ATD, 2 were TD and 1 was hypochondrogenesis. TD was frequently complicated by hydramnios. Of 8 cases studied chromosomally, only 1 showed chromosomal abnormality -46XY, inv 9. Intrauterine growth retardation was frequently associated with OI. Pulmonary hypoplasia was present in 23 cases (79%), including all cases of ATD, SRPS and hypochondrogenesis, 11 in TD and 7 in OI. Other associated anomalies were present in 17 cases (59%).

Well-Differentiated Papillary Mesothelioma of the Peritoneum: A case report .: Yi Kyeong Chun, Yee Jeong Kim, Sung Ran Hong; Korean J Pathol. 1998;32(9):697-699.

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Abstract: Well-differentiated papillary mesothelioma (WDPM) of the peritoneum is considered to be a distinct subtype of peritoneal mesothelioma and has mostly behaved in a benign fashion. We report a case of WDPM in a 48-year-old-woman. It was incidentally found during a hysterectomy for a uterine cervical carcinoma. Grossly, the tumor was composed of multiple peritoneal nodules, measuring up to 2 cm. Microscopically, the nodules showed well-developed papillae lined by a single layer of cuboidal mesothelial cells. Immunohistochemical staining revealed a positive reaction for cytokeratin and a negative reacion for carcinoembryonic antigen and Leu-M1. Ultrastructurally, the tumor cells showed numerous long, slender microvilli and desmosomes.

Carcinosarcoma (Malignant M llerian Mixed Tumor) of the Female Genital Tract: A clinical and pathologic study of ten carcinosarcomas.: Sung Ran Hong, Yee Jeong Kim, Hy Sook Kim, Jae Uk Shim, Chong Taik Park; Korean J Pathol. 1998;32(5):362-369.

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Abstract: Carcinosarcomas of the female genital tract have generally been regarded as a type of sarcoma. Recent studies, however, suggest the tumor may be more closely related to carcinoma and may represent metaplastic carcinoma in histogenesis. We analyzed clinicopathologic and immunohistochemical features of 10 carcinosarcomas to evaluate the relative importance of the carcinomatous and sarcomatous components in metastasis and recurrence. The primary tumor originated in the uterine body in seven cases, the uterine cervix in two and the ovary in one. Patient,s ages ranged from 54 to 71 years (mean, 64). The most common symptom of the uterine mass was vaginal bleeding. The median survival time was 21 months following diagnosis in five cases. Surgico-pathologic FIGO stages of five patients who received an operation were stage III and IV, but clinical FIGO stage of three patients (60%) among them were I. Lymphovascular invasions were identified in seven areas; five vascular invasion lesions showed the carcinomatous component alone, one the sarcomatous component alone, and remained one admixture of both components. Metastatic and recurrent lesions to the paraaortic lymph node, ovary, pelvic wall, or vaginal vault showed characteristically carcinomatous component only. Immunohistochemically, positive reactions for cytokeratin and epithelial membrane antigen were noted in the sarcomatous component of five cases. Vimentin positivity was detected in carcinomatous component of three cases. We conclude that the dominant element in carcinosarcomas of the female genital tract is the carcinomatous component. The survival rate of carcinosarcoma is extremely poor. The surgico-pathologic stage is better indicator of survival than the clinical stage. Immunohistochemical findings suggest that carcinosarcoma may represent a metaplastic carcinoma in histogenesis.

A Study for IL-6, IL-13 and TIMP-3 Expressions of Placenta, Fetus and Endometrium in Pregnant Mice after Treatment with Lipopolysaccharide.: Sung Ran Hong, In Gul Moon, Ju Young Seoh, Yee Jeong Kim, Sung Sook Kim, Woon Sup Han; Korean J Pathol. 1998;32(5):352-361.

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Abstract: We examined C3H pregnant mice at 15 days (70% gestation) after treatment of lipopolysaccaride (LPS) to observe the changes of IL-6 concentration in maternal serum and amniotic fluid and expression of IL-6, IL-13 & TIMP-3 in placenta, fetus and endometrium, and to investigate the correlation among IL-6, IL-13 and TIMP-3. The results were as follows: 1) IL-6 in serum and amniotic fluid after treatment of LPS was significantly elevated; peaked at 1, 2, 4, 5 hours and decreased to control level at 8 hours (P<0.05). IL-6 in placental disc, chorioamnionic membrane, fetus, decidua and endometrial epithelium was overexpressed significantly at 1, 2, 4 hours after treatment of LPS (P<0.05). IL-6 overexpression was more significantly increased in maternal tissue than fetal tissue (P<0.05). 2) Increased concentration of amniotic fluid IL-6 was equally originated from transplacental crossage of maternal serum IL-6, and direct local production of IL-6 from placenta, fetus and endometrium (P<0.05). 3) IL-13 in placental disc, chorioamnionic membrane, fetus, decidua and endometrial epithelium was overexpressed after treatment of LPS, but not significant statistically. 4) TIMP-3 was overexpressed in placental disc, chorioamnionic membrane, fetus and decidua. TIMP-3 overexpression was more significant in placental disc than other tissues (P<0.05). 5) Overexpressions in IL-13 and IL-6 revealed direct proportional correlation coefficient (Spearman correlation coefficient, 0.5212 ; P<0.05). IL-6 expression was a head of overexpression of TIMP-3, but not significant. In conclusion, all of IL-6, IL-13 and TIMP-3 relate with inflammatory response, especially IL-6 in maternal serum, amniotic fluid and tissue of placenta, fetus and endometrium was so sensitive that it can be an indicator for antenatal diagnosis of chorioamnonitis, and amniotic fluid IL-6 is equally originated from maternal serum and from tissue of placenta, fetus and endometrium. IL-13 and TIMP-3 may have parallel correlation to the IL-6 in fetal and maternal tissue after treatment of LPS.

Sensitivity and Scoring of AutoPap 300 QC System for Abnormal Cervicovaginal Cytology .: Sung Ran Hong; Korean J Cytopathol. 1998;9(2):139-146.

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Abstract PDF: The AutoPap 300 QC System is an automated device for the analysis and classification of conventional cervical cytology slides for quality control purpose. These studies evaluated the sensitivity of the AutoPap 300 QC System, and estimated morphologic features other than epithelial abnormality to identify a high quality control(QC) score with the AutoPap 300 QC System. The sensitivity of the AutoPap 300 QC System at 10% review rate for 210 cases of cervicovaginal cytology with low grade squamous intraepithelial lesion(LSIL) and higher grade lesion was assessed, and compared with a 10% random rescreening. The morphologic features, such as presence of endocervical component, dirty background, atrophy, abnormal cell size, and cellularity of single atypical cells were estimated in 45 cases of no review and 30 cases of QC review cases. The AutoPap 300 QC System identified 119(56.7%) out of 210 cases with LSIL and higher grade lesion at 10% review rate. It was more sensitive to squamous cell lesions(50-62%) than to glandular lesions(10%). The dirty background and the scanty cellularity of single atypical cells were significantly related to low QC score. Conclusively, AutoPap 300 QC System is superior to human random rescreen for the identification of false negative smears. The upgrading of this device is required to enhance the detection of glandular lesion and certain inadequate conditions of the slides.

Clinical Experience and Sensitivity of the AutoPap 300 QC System in Cervicovaginal Cytology.: Sung Ran Hong, Jong Sook Park, Hoi Sook Jang, Yee Jeong Kim, Hy Sook Kim, Chong Taik Park, In Sou Park; Korean J Cytopathol. 1998;9(1):37-44.

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Abstract PDF: OBJECTIVE: False negatives of cervical smears due to screening errors pose a significant and persistent problem. AutoPap 300 QC System, an automated screening device, is designed to rescreen conventionally prepared Pap smears initially screened by cytotechnologists as normal. Clinical experience and sensitivity of the AutoPap 300 QC System were assessed and compared with current 10% random quality control technique. MATERIALS AND METHODS: In clinical practice, a total of 18,592 "within normal limits" or "benign cellular changes" cases classified by The Bethesda System were rescreened by the AutoPap System. In study for sensitivity of The AutoPap System to detect false negatives, a total of 1,680 "within normal limits" or "benign cellular changes" cases were rescreened both manually and by the AutoPap System. The sensitivity of the AutoPap System to these false negatives was assessed at 10% review rate to compare 10% random manual rescreen.
RESULTS
In clinical practice, 38 false negatives were identified by the AutoPap System and we had achieved 0.2% reduction in the false negative rate of screening error. In study for sensitivity, 37 false negatives were identified by manual rescreening, and 23 cases(62.2%) of the abnormal squamous cytology were detected by the AutoPap System at 10% review rate. CONCLUSONS: The AutoPap 300 QC System is a sensitive automated rescreening device that can detect potential false negatives prior to reporting and can reduce false negative rates in the laboratory. The device is confirmed to be about eight times superior to the 10% random rescreen in detecting false negatives.

Female Adnexal Tumor of probable Wolffian origin: A case report.: Yee Jeong Kim, Sung Ran Hong, Hy Sook Kim, Hyon U Lee; Korean J Pathol. 1994;28(4):427-429.

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Abstract PDF: We report a case of right broad ligament tumor with features of female adnexal tumor of probable wolffian origin. A 40-year-old woman presented with dysfunctional uterine bleeding. Ultrasonography revealed 1 10cm sized right parovarian solid mass. On microscopic examination, the tumor showed mixed pattern of tightly packed tubular structures and diffuse spindle cell proliferation. Immunohistochemical study demonstrated cytokeratin-and vimentin-positivity and carcino-embryonic antigen-negativity. The ultrastructural study showed prominent tubular structures, continuous basal lamina, definite junctional complex but no secretory granules or glycogen particles, favoring wolffian origin.

Primary Transitional Cell Carcinoma of the Ovary: A case report.: Eun Kyung Kim, Sung Ran Hong, Jae Uk Shim, Hy Sook Kim; Korean J Pathol. 1993;27(1):78-80.

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Abstract PDF: Primary ovarian transitional cell carcinoma(TCC) is a recently described, distinct subtype of ovarian carcinoma resembling TCC of the urinary bladder. TCC differs from malignant Brenner tumor(MBT) by absence of benign or proliferative Brenner component and prominent stromal calcification. TCC also represents a high-stage tumor with more aggressive biologic behavior than MBT, but it has a relatively favorable response to chemotherapy. TCC may arise from the pluripotential surface epithelium of the ovary or from the cells with urothelial differentiation, rather than from a benign or proliferative Brenner tumor precursors. We report a case of pure form of primary TCC presenting as a left ovarian mass in 45-year-old woman.

Significance of cytologic detection of endometrial carcinoma in papanicolaou smear:the relevance of histologic type, grade and stage.: Sung Ran Hong, Hy Sook Kim, Jong Sook Park; Korean J Cytopathol. 1993;4(2):93-99.

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Abstract PDF: No abstract available.

Evaluation of "atypical squamous cells of undetermined significance" by the bethesda system.: Yee Jeong Kim, Sung Ran Hong, Hy Sook Kim, Jong Sook Park, Kye Hyun Kim, Kyung Ho Lim, Jae Uk Shim, Chong Taik Park, Chong Soo Chun; Korean J Cytopathol. 1993;4(2):81-86.

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Abstract PDF: No abstract available.

Cytologic features of primary amelanotic melanoma of the vagina: a case report.: Sung Ran Hong, Hy Sook Kim, Chong Tack Park; Korean J Cytopathol. 1993;4(1):41-44.

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Abstract PDF: No abstract available.

Mammary Hamartoma: A case report.: Sung Ran Hong, Hy Sook Kim, Byung Jae Cho; Korean J Pathol. 1988;22(4):471-474.

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Abstract PDF: We have recently experienced a case of mammary hamartoma in 29-year-old woman. Hamartoma of the breast is a rare benign tumor-like lesion which is characteristically well demarcated by thin layer of fibrofatty tissue and composed of essentially normal mammary tissue with mammary glandular structure and fibrous stroma containing variable amounts of fat. The lobular architecture is relatively well preserved. It can be readily recognized, but should not be confused with fibroadenoma or mammary dysplasia. It also shows characteristic mammographic picture.

Malignant Mesenchymoma of the Right Axillary Area: A case report.: Sung Ran Hong, Gui Ohk Yoon, Seong Sook Kim, Hye Jae Cho, Il Hyang Ko; Korean J Pathol. 1986;20(1):107-111.

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Abstract PDF: The term malignant mesenchymoma has been applied to those tumors of the soft tissue of mesenchymal origin which are composed of tumor cells differentiating into two or more unrelated malignant forms in addition to the fibrosarcomatous element. Recently authors experienced a case of malignant mesenchymoma in the right axillary area. Microscopically the sarcoma revealed multiple pattern of differentiation, including liposarcoma, malignant schwannoma, fibrosarcoma, malignant fibrous histiocytoma and rhabdomyoblastoma. The presence of rhabdomyblastic cells were proved by immunochemical study utilizing desmin. This patient was treated with surgical excision and radiation.

Sclerosing Hemangioma of the Lung: A report of 2 cases.: Sung Ran Hong, Hye Jae Cho, In Ki Paik, Ill Hyang Ko, Dong Soon Kim, Je G Chi, Eui Keun Ham; Korean J Pathol. 1986;20(1):84-90.

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Abstract PDF: Sclerosing hemangioma of the lung is uncommon benign neoplasm of uncertain histogenesis, although their radiological appearance is relatively distinct and well-defined. Recently, we experienced 2 cases of sclerosing hemangiomas of the lungs in 61 and 39 years old women. The light microscopic findings of the tissues are similar to the features reported by Liebow and Hubbell(1956). The basic cellular response is thought to be type II pneumonocytes because of findings of multilamellar-like bodies within stromal cells with electron microscopy in case I in addition to other characteristics generally found in epithelial cells.

Adenocarcinoma Arising in benign Teratoma of Mediastinum: A case report.: Seong Sook Kim, Sung Ran Hong, In Ki Paik, Ill Hyang Ko; Korean J Cytopathol. 1985;19(2):238-243.

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Abstract PDF: Although the mediastinum is the second favorite location of primary teratoma in adults, primary malignant teratoma in mediastinum is rare in incidence. Malignant teratoma includes teratocarcinoma, immature teratoma and malignant transformation in benign teratoma. The latter is rarer than others types, and undifferentiated or squamous cell carcinoma are the major incidence. We experience a case of unique adenocarcinoma composed of signet ring cells in mature teratoma of mediastinum and brief review of the literatures are included.

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