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Current state of cytopathology residency training: a Korean national survey of pathologists
Uiju Cho, Tae Jung Kim, Wan Seop Kim, Kyo Young Lee, Hye Kyoung Yoon, Hyun Joo Choi
J Pathol Transl Med. 2023;57(2):95-101.   Published online March 14, 2023
DOI: https://doi.org/10.4132/jptm.2023.01.06
  • 1,354 View
  • 75 Download
AbstractAbstract PDFSupplementary Material
Background
Although the Korean Society for Cytopathology has developed educational goals as guidelines for cytopathology education in Korea, there is still no systematic approach to cytopathology education status for pathology residents. Furthermore, satisfaction with cytopathology education and with the outcome of the current training/educational program has not been investigated in Korea. This study aimed to obtain comprehensive data on the current state of cytopathology education for residents and evaluate education outcomes.
Methods
An online survey was conducted in December 2020 for the board-certified pathologists and training residents registered as members of the Korean Society for Cytopathology. The questionnaire comprised questions that investigated the current status of cytopathology at each training institution, the degree of satisfaction with the work and education related to cytopathology, outcomes of cytopathology training, and educational accomplishments.
Results
Of the participants surveyed, 12.3% (132/1,075) completed the questionnaire, and 36.8% (32/87) of cytopathology residents participated. The mean overall satisfaction with cytopathology education was 3.1 points (on a 1- to 5-point scale, 5: very satisfied). The most frequent suggestion among the free description format responses was to expand educational opportunities, such as online education opportunities, outside of the individual institutions.
Conclusions
Our results showed that cytopathology training in Korea needs further improvement. We expect that this study will inform systematic training of competent medical personnel armed with broad cytopathology knowledge and strong problem-solving abilities.
Loss of Human Leukocyte Antigen Class I Expression Is Associated with Poor Prognosis in Patients with Advanced Breast Cancer
Hong Sik Park, Uiju Cho, So Young Im, Chang Young Yoo, Ji Han Jung, Young Jin Suh, Hyun Joo Choi
J Pathol Transl Med. 2019;53(2):75-85.   Published online November 14, 2018
DOI: https://doi.org/10.4132/jptm.2018.10.11
  • 6,820 View
  • 184 Download
  • 29 Web of Science
  • 32 Crossref
AbstractAbstract PDF
Background
Human leukocyte antigen class I (HLA-I) molecules play important roles in regulating immune responses. Loss or reduction of HLA-I expression has been shown to be associated with prognosis in several cancers. Regulatory T-cells (Tregs) also play critical functions in immune response regulation. Evaluation of HLA-I expression status by the EMR8-5 antibody and its clinical impact in breast cancer have not been well studied, and its relationship with Tregs remains unclear.
Methods
We evaluated HLA-I expression and Treg infiltration by immunohistochemistry in 465 surgically resected breast cancer samples. We examined the correlation between HLA-I expression and Treg infiltration and clinicopathologic characteristics and survival analyses were performed.
Results
Total loss of HLA-I expression was found in 84 breast cancer samples (18.1%). Univariate survival analysis revealed that loss of HLA-I expression was significantly associated with worse disease-specific survival (DSS) (p = .029). HLA-I was not an independent prognostic factor in the entire patient group, but it was an adverse independent prognostic factor for DSS in patients with advanced disease (stage II–IV) (p = .031). Treg numbers were significantly higher in the intratumoral stroma of HLA-I–positive tumors than in HLA-I–negative tumors (median 6.3 cells/high power field vs 2.1 cells/high power field, p < .001). However, Tregs were not an independent prognostic factor in our cohort.
Conclusions
Our findings suggest that the loss of HLA-I expression is associated with poor prognosis in breast cancer patients, highlighting the role of HLA-I alterations in immune evasion mechanisms of breast cancer. HLA-I could be a promising marker that enables the application of more effective and precise immunotherapies for patients with advanced breast cancer.

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Microtubule-Associated Protein Tau, α-Tubulin and βIII-Tubulin Expression in Breast Cancer
Soyoung Im, Changyoung Yoo, Ji-Han Jung, Ye-Won Jeon, Young Jin Suh, Youn Soo Lee, Hyun Joo Choi
Korean J Pathol. 2013;47(6):534-540.   Published online December 24, 2013
DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.6.534
  • 7,129 View
  • 61 Download
  • 9 Crossref
AbstractAbstract PDF
Background

The microtubule-associated protein Tau binds to both inner and outer surfaces of microtubules, leading to tubulin assembly and microtubule stabilization. The aim of this study was to evaluate the significance of Tau, α-tubulin, and βIII-tubulin expression in breast carcinoma and to assess their relationships with disease progression in the context of taxane treatment.

Methods

Immunohistochemical expressions of Tau, α-tubulin, and βIII-tubulin were assessed in 183 breast cancer cases. Expression was correlated with clinicopathologic parameters, disease progression and overall survival.

Results

Tau expression was correlated with lymph node metastasis and estrogen receptor (ER) positivity (p=.003 and p<.001, respectively). Loss of α-tubulin was significantly correlated with distant metastasis (p=.034). Loss of βIII-tubulin was correlated with lymph node metastasis and ER positivity (p=.004 and p<.001, respectively). In taxane-treated cases, Tau expression and loss of α-tubulin and βIII-tubulin expression were related to disease progression (p=.001, p=.028, and p=.030, respectively). Tau expression was associated with a worse survival rate in taxane-treated patients (p=.049).

Conclusions

Tau expression and loss of α-tubulin and βIII-tubulin expression were correlated with aggressive behavior in taxane-treated breast cancer. Further evaluation of Tau, α-tubulin and βIII-tubulin may be useful in predicting clinical behavior and seeking therapeutic measures in taxane-based chemotherapy for breast cancer.

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Hedgehog Related Protein Expression in Breast Cancer: Gli-2 Is Associated with Poor Overall Survival
Soyoung Im, Hyun Joo Choi, Changyoung Yoo, Ji-Han Jung, Ye-Won Jeon, Young Jin Suh, Chang Suk Kang
Korean J Pathol. 2013;47(2):116-123.   Published online April 24, 2013
DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.2.116
  • 7,447 View
  • 97 Download
  • 31 Crossref
AbstractAbstract PDF
Background

The hedgehog (Hh) signaling pathway is known to play a critical role in various malignancies, but its clinicopathologic role in breast cancer is yet to be established.

Methods

Tissue microarray blocks from 334 cases of breast cancer were prepared. The expression of six Hh signaling proteins including sonic hedgehog (Shh), patched (Ptch), smoothened (Smo), and the glioma-associated oncogene (Gli)-1, Gli-2, and Gli-3 were analyzed immunohistochemically.

Results

The expression of Hh signaling proteins was significantly correlated with some prognostic factors including the correlation of lymph node metastasis with the expression of Shh (p=0.001) and Ptch (p=0.064), the correlation of the stages with Shh and Gli-3 expression (p=0.007 and p=0.024, respectively), the correlation of the nuclear grade with the Smo (p=0.004) and Gli-3 (p=0.000), and the correlation of the histologic grade with the Ptch (p=0.016), Smo (p=0.007), and Gli-3 (p=0.000). The Shh, Ptch, Smo, Gli-1, and Gli-2 expression was significantly different between the phenotypes (p=0.000, p=0.001, p=0.004, p=0.039, and p=0.031, respectively). Gli-2 expression was correlated with a worse overall survival outcome (p=0.012).

Conclusions

Hh pathway activation is correlated with a more aggressive clinical behavior in breast carcinomas. The comparison of phenotypes suggested that the Hh pathway may be a useful therapeutic target for breast carcinoma. Patients with Gli-2 expression had a significantly lower overall survival rate and, therefore, it showed promise as a prognostic marker.

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  • Loss of Tumor Suppressor ARID1A Protein Expression Correlates with Poor Prognosis in Patients with Primary Breast Cancer
    Hyun Deuk Cho, Jong Eun Lee, Hae Yoen Jung, Mee-Hye Oh, Ji-Hye Lee, Si-Hyong Jang, Kyung-Ju Kim, Sun Wook Han, Sung Yong Kim, Han Jo Kim, Sang Byung Bae, Hyun Ju Lee
    Journal of Breast Cancer.2015; 18(4): 339.     CrossRef
  • Prognostic impact of the expression of Hedgehog proteins in cervical carcinoma FIGO stages I–IV treated with radiotherapy or chemoradiotherapy
    Louise Bohr Mordhorst, Cecilia Ahlin, Bengt Sorbe
    Gynecologic Oncology.2014; 135(2): 305.     CrossRef
  • Sonic hedgehog signaling may promote invasion and metastasis of oral squamous cell carcinoma by activating MMP-9 and E-cadherin expression
    Hai-Xia Fan, Shan Wang, Hong Zhao, Nian Liu, Dong Chen, Miao Sun, Jin-Hua Zheng
    Medical Oncology.2014;[Epub]     CrossRef
Fine Needle Aspiration Cytology of Thyroid Follicular Neoplasm: Cytohistologic Correlation and Accuracy
Changyoung Yoo, Hyun Joo Choi, Soyoung Im, Ji Han Jung, Kiouk Min, Chang Suk Kang, Young-Jin Suh
Korean J Pathol. 2013;47(1):61-66.   Published online February 25, 2013
DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.1.61
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AbstractAbstract PDF
Background

This study evaluated the accuracy of fine needle aspiration cytology (FNAC) in cases of follicular neoplasm (FN) on the basis of histologic diagnosis, and reviewed the cytologic findings of FN according to the FNAC.

Methods

Among the 66 cases diagnosed with thyroid FN by FNAC during the 7-year period from 2003 to 2009, 36 cases that had undergone thyroid surgery were available for review. Cytologic diagnosis was compared with the histologic diagnosis of each case.

Results

Among the 36 cases with a cytologic diagnosis of thyroid FN, histologic diagnosis was as follows: 20 follicular adenomas (55.6%), 3 Hurthle cell adenomas (8.3%), 2 follicular carcinomas (5.6%), 8 nodular goiters (22.2%), 2 papillary carcinomas (5.6%), and 1 Hashimoto's thyroiditis (2.8%), resulting in a diagnostic accuracy of FNAC for thyroid FN of 69.5%.

Conclusions

This study shows that FNAC for thyroid FN is a useful primary screening method because when FN is diagnosed by FNAC, the rate of FN histologic diagnosis is relatively high, however, adequate sampling and experience is a prerequisite for this procedure.

Citations

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    Pradipta Kumar Parida, Siddhartha Pradhan, Chapity Preetam, Pradeep Pradhan, Dillip Kumar Samal, Saurav Sarkar
    Indian Journal of Otolaryngology and Head & Neck Surgery.2022; 74(S2): 2053.     CrossRef
  • Ultrasonographic and cytologic assessments of follicular neoplasms of the thyroid: Predictive features differentiating follicular carcinoma from follicular adenoma
    Hye Shin Ahn, Hee Sung Kim, Min Ji Hong, Paula Soares
    PLOS ONE.2022; 17(7): e0271437.     CrossRef
  • 2019 Practice guidelines for thyroid core needle biopsy: a report of the Clinical Practice Guidelines Development Committee of the Korean Thyroid Association
    Chan Kwon Jung, Jung Hwan Baek, Dong Gyu Na, Young Lyun Oh, Ka Hee Yi, Ho-Cheol Kang
    Journal of Pathology and Translational Medicine.2020; 54(1): 64.     CrossRef
  • Preoperative diagnostic categories of fine needle aspiration cytology for histologically proven thyroid follicular adenoma and carcinoma, and Hurthle cell adenoma and carcinoma: Analysis of cause of under- or misdiagnoses
    Hee Young Na, Jae Hoon Moon, June Young Choi, Hyeong Won Yu, Woo-Jin Jeong, Yeo Koon Kim, Ji-Young Choe, So Yeon Park, Paula Soares
    PLOS ONE.2020; 15(11): e0241597.     CrossRef
  • Core needle biopsy of thyroid nodules: outcomes and safety from a large single-center single-operator study
    Jooae Choe, Jung Hwan Baek, Hye Sun Park, Young Jun Choi, Jeong Hyun Lee
    Acta Radiologica.2018; 59(8): 924.     CrossRef
  • Cytological Features That Differentiate Follicular Neoplasm from Mimicking Lesions
    Kanghee Han, Hwa-Jeong Ha, Joon Seog Kong, Jung-Soon Kim, Jae Kyung Myung, Jae Soo Koh, Sunhoo Park, Myung-Soon Shin, Woo-Tack Song, Hye Sil Seol, Seung-Sook Lee
    Journal of Pathology and Translational Medicine.2018; 52(2): 110.     CrossRef
  • Comparison of the Diagnostic Efficacy of Ultrasound‐Guided Core Needle Biopsy With 18‐ Versus 20‐Gauge Needles for Thyroid Nodules
    Hye Shin Ahn, Mirinae Seo, Su Min Ha, Hee Sung Kim
    Journal of Ultrasound in Medicine.2018; 37(11): 2565.     CrossRef
  • Subclassification of Bethesda Atypical and Follicular Neoplasm Categories According to Nuclear and Architectural Atypia Improves Discrimination of Thyroid Malignancy Risk
    Joel Xue Yi Lim, Min En Nga, Dedrick Kok Hong Chan, Wee Boon Tan, Rajeev Parameswaran, Kee Yuan Ngiam
    Thyroid.2018; 28(4): 511.     CrossRef
  • The expression profile of integrin receptors and osteopontin in thyroid malignancies varies depending on the tumor progression rate and presence of BRAF V600E mutation
    Galina Chernaya, Nina Mikhno, Tatiana Khabalova, Svetlana Svyatchenko, Lyudmila Mostovich, Sergey Shevchenko, Lyudmila Gulyaeva
    Surgical Oncology.2018; 27(4): 702.     CrossRef
  • The Usefulness of Immunocytochemistry of CD56 in Determining Malignancy from Indeterminate Thyroid Fine-Needle Aspiration Cytology
    Hyunseo Cha, Ju Yeon Pyo, Soon Won Hong
    Journal of Pathology and Translational Medicine.2018; 52(6): 404.     CrossRef
  • Core Needle Biopsy of the Thyroid: 2016 Consensus Statement and Recommendations from Korean Society of Thyroid Radiology
    Dong Gyu Na, Jung Hwan Baek, So Lyung Jung, Ji-hoon Kim, Jin Yong Sung, Kyu Sun Kim, Jeong Hyun Lee, Jung Hee Shin, Yoon Jung Choi, Eun Ju Ha, Hyun Kyung Lim, Soo Jin Kim, Soo Yeon Hahn, Kwang Hwi Lee, Young Jun Choi, Inyoung Youn, Young Joong Kim, Hye Sh
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  • Radiofrequency ablation of small follicular neoplasms: initial clinical outcomes
    Su Min Ha, Jin Yong Sung, Jung Hwan Baek, Dong Gyu Na, Ji-hoon Kim, Hyunju Yoo, Ducky Lee, Dong Whan Choi
    International Journal of Hyperthermia.2017; : 1.     CrossRef
  • A meta‐analytic review of the Bethesda System for Reporting Thyroid Cytopathology: Has the rate of malignancy in indeterminate lesions been underestimated?
    Patrizia Straccia, Esther Diana Rossi, Tommaso Bizzarro, Chiara Brunelli, Federica Cianfrini, Domenico Damiani, Guido Fadda
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  • Impact of NRAS Mutations on the Diagnosis of Follicular Neoplasm of the Thyroid
    Ja-Seong Bae, Seung Kyu Choi, Sora Jeon, Yourha Kim, Sohee Lee, Youn Soo Lee, Chan Kwon Jung
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  • Diagnosis of Thyroid Follicular Neoplasm: Fine-Needle Aspiration Versus Core-Needle Biopsy
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    Thyroid.2014; 24(11): 1612.     CrossRef
Case Reports
Primary Endometrial Squamous Cell Carcinoma: A Case Report and Review of Relevant Literature on Korean Women
Sung Jong Lee, Hyun Joo Choi
Korean J Pathol. 2012;46(4):395-398.   Published online August 23, 2012
DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.4.395
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  • 12 Crossref
AbstractAbstract PDF

Primary endometrial squamous cell carcinoma (PESCC) is an extremely rare tumor with unclear pathogenesis. A 54-year-old postmenopausal woman presented with a 6-month history of vaginal bleeding. The patient was provisionally diagnosed with uterine submucosal leiomyoma. This was followed by total hysterectomy with a bilateral salpingo-oophorectomy under the laparoscopic guidance. Histopathologically, the tumor was PESCC which was accompanied by a lack of the tumor in the uterine cervix. The tumor showed positive immunoreactivity for p16INK4a. But there was no evidence of human papillomavirus (HPV) on in situ hybridization and HPV DNA chip analysis. We also present a review of the relevant literature on Korean women.

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  • p16 Block Type Overexpression, p53 Wild Type Reactivity, and Cervical Involvement do not Always Exclude the Diagnosis of Primary Endometrial Squamous Cell Carcinoma (PESCC)
    Daniela Fanni, Clara Gerosa, Michele Peiretti, Valerio Mais, Elena Massa, Stefano Angioni, Gavino Faa
    International Journal of Gynecological Pathology.2024; 43(2): 200.     CrossRef
  • Pathogenetic characteristics of endometrioid adenocarcinoma of uterus at present stage
    T. I. Moiseenko, S. V. Shatalova, E. M. Nepomnyashchaya, V. A. Bandovkina, M. L. Adamyan
    Medical alphabet.2024; (36): 35.     CrossRef
  • Case report: Clinicopathological characteristic of two cases of primary endometrial squamous cell carcinoma and review of the literature
    Hui-Bin Zhang, Li-Hua Lin, Qiu-Ping Lin, Yuan-Qing Lin, Dan Luo, Shu-Xia Xu
    Frontiers in Oncology.2024;[Epub]     CrossRef
  • Treatment of primary squamous cell carcinoma of the endometrium and review of previous literature: A case report
    Liyun Song, Qi Wu, Suning Bai, Ren Xu, Xiaona Wang, Yanyan Yang
    Medicine.2023; 102(17): e33667.     CrossRef
  • Prevalence of human papilloma virus and Chlamydia trachomatis in endometrial and cervical carcinoma: a comparative study in North Indian women
    Heena Gautam, Sumita Mehta, Nidhi Nayar, Neha Kumar, Syed Akhtar Husain, Mausumi Bharadwaj
    Systems Biology in Reproductive Medicine.2023; 69(6): 399.     CrossRef
  • PAX8 Positivity, Abnormal p53 Expression, and p16 Negativity in a Primary Endometrial Squamous Cell Carcinoma: A Case Report and Review of the Literature
    Daniela Fanni, Michele Peiretti, Valerio Mais, Elena Massa, Clara Gerosa, Francesca Ledda, Maria Luisa Fais, Gavino Faa, Stefano Angioni
    International Journal of Gynecological Pathology.2022; 41(4): 431.     CrossRef
  • Molecular Analysis of HPV-independent Primary Endometrial Squamous Cell Carcinoma Reveals TP53 and CDKN2A Comutations
    Mark R. Hopkins, Doreen N. Palsgrove, Brigitte M. Ronnett, Russell Vang, Jeffrey Lin, Tricia A. Murdock
    American Journal of Surgical Pathology.2022; 46(12): 1611.     CrossRef
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    Sanda Rajhvajn, Ana Barišić, Lada Škopljanac‐Mačina, Danijela Jurič, Vesna Mahovlić
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  • Primary squamous cell carcinoma of the endometrium associated with human papilloma virus in a young woman: a case report
    Tchin Darré, Abdoul-Samadou Aboubakari, Lantam Sonhaye, Baguilane Douaguibe, Akila Bassowa, Gado Napo-Koura
    Journal of Medical Case Reports.2019;[Epub]     CrossRef
  • Primary squamous cell carcinoma of the endometrium in a woman of perimenopausal age
    Chao Zhang, Hongyan Zhang, Linqing Yang, Yunfei Wang, Xiaoyu Li, Jinfeng Guo, Jing Xu
    Medicine.2018; 97(48): e13418.     CrossRef
  • S100P is Overexpressed in Squamous Cell and Adenosquamous Carcinoma Subtypes of Endometrial Cancer and Promotes Cancer Cell Proliferation and Invasion
    Hongfei Jiang, Hang Hu, Fan Lin, Yoon Pin Lim, Yunfen Hua, Xiaomei Tong, Songying Zhang
    Cancer Investigation.2016; 34(10): 477.     CrossRef
  • Überraschung in der Abradatdiagnostik
    U. Kellner, A. Kellner, U. Cirkel
    Der Pathologe.2015; 36(3): 317.     CrossRef
Malignant Fibrous Histiocytoma Arising in a Mature Cystic Teratoma of the Ovary: A Case Report.
Soyoung Im, Sun Mi Lee, Ji Han Jung, Hyun Joo Choi, Jinyoung Yoo, Seok Jin Kang, Kyo Young Lee
Korean J Pathol. 2010;44(3):322-325.
DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.3.322
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AbstractAbstract PDF
A 50-year-old female patient presented with anorexia and weight loss. Pelvic computed tomography revealed a 12.5 x 7.3 cm heterogeneous mass in the left ovary. About 30% of the tumor was occupied by a mature cystic teratoma. The remaining solid portion was composed of fibrous and histiocytic elements, arranged in storiform patterns admixed with bizarre giant cells. The mitotic index was 8 per 10 high power fields, including atypical mitoses. The only immunopositivity was for vimentin. The tumor was diagnosed as a malignant fibrous histiocytoma arising in a mature cystic teratoma. To the best of our knowledge, this is only the third such case in the English language literature.
Original Article
Alteration of G1/S Cell Cycle Regulatory Proteins in Carcinogenesis of Cutaneous Squamous Cell Carcinomas.
Soyoung Im, Changyoung Yoo, Ji Han Jung, Hyun Joo Choi, Jinyoung Yoo, Seok Jin Kang, Kyo Young Lee
Korean J Pathol. 2009;43(6):542-549.
DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.6.542
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AbstractAbstract PDF
BACKGROUND
Aberration of the cell cycle regulatory proteins has been reported to contribute to the development and progression of human malignancy. We studied the expression of G1/S cell cycle regulatory proteins to investigate the carcinogenesis in cutaneous squamous cell lesions. METHODS: We evaluated the expressions of p16, pRb, cyclin D1 and Ki-67 protein by immunonohistochemistry in cases of normal skin (n=15), seborrheic keratosis (SK; n=26), actinic keratosis (AK; n=30), Bowen's disease (BD; n=37), keratoacanthoma (KA; n=23), and squamous cell carcinoma (SCC; n=22). RESULTS: The Ki-67 expression gradually increased from SK, through AK, to BD. The expression of p16 was more increased in BD than that in AK. The decreased expressions of p16 and Rb, and the increased expression of cyclin D1 were observed to a greater degree in SCC than those in BD. The expressions of cyclin D1 and Ki-67 were higher in SCC than those in KA. CONCLUSIONS: The altered expressions of p16, Rb, and cyclin D1 were considered to be related to the carcinogenesis in the cutaneous squamous cell lesions. Therefore, immunohistochemical studies of the cell cycle regulatory proteins and a combined analysis may be helpful as an adjunct to the histomorphology in the diagnosis of cutaneous squamous cell lesions.

Citations

Citations to this article as recorded by  
  • Expression of pRb, p53, p16 and Cyclin D1 and Their Clinical Implications in Urothelial Carcinoma
    Kyungji Lee, Eun Sun Jung, Young-Jin Choi, Kyo Young Lee, Ahwon Lee
    Journal of Korean Medical Science.2010; 25(10): 1449.     CrossRef
Case Reports
Pigmented Squamous Cell Carcinoma Arising from Pigmented Actinic Keratosis.
Hyun Joo Choi, Gyeong Sin Park, Seok Jin Kang, Yeong Jin Choi, Byung Kee Kim, Sun Moo Kim, Sang In Shim
Korean J Pathol. 1998;32(1):76-79.
  • 1,876 View
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AbstractAbstract PDF
Pigmented squamous cell carcinoma is a very rare malignant, pigmented, epidermal tumor. The rarity of pigmented squamous cell carcinomas may reflect in part their misdiagnosis as other pigmented neoplasms, particularly malignant melanoma. To our knowledge, only five cases have been reported in literature. We recently experienced a case of pigmented squamous cell carcinoma arising from pigmented actinic keratosis in a 77 years old female. Physical examination showed a 0.8 0.6 cm, smooth, dark brown pigmented patch with irregular but sharply defined borders located on the upper left chest. The biopsy specimen showed histologic findings of pigmented actinic keratosis with abundant melanin pigments, which became pigmented squamous cell carcinoma. Most of pigments in the squamous cell carcinoma were contained within the melanocytes along with the neoplastic squamous cells.
Warty Dyskeratoma with a Cutaneous Horn: Report of a case.
Ah Won Lee, Hyun Joo Choi, Youn Soo Lee, Seok Jin Kang, Byung Kee Kim, Sun Moo Kim
Korean J Pathol. 1998;32(8):616-618.
  • 1,598 View
  • 10 Download
AbstractAbstract
The clinical and pathological features of warty dyskeratoma are presented. Warty dyskeratoma is a rarely encountered, solitary, benign cutaneous tumor occurring most often on the head and neck and to our knowledge, no cases associated with cutaneous horn have been published in western literature. We experienced a case of warty dyskeratoma with a cutaneous horn occurring in a 70-year-old male, who had a 1.3 cm-sized and slowly growing nodule on his neck. A brief review of the literature, was made especially in relation to the pathological findings and histogenesis of warty dyskeratoma.
Heterotopic Brain Tissue in the Soft Palate.
Hyun Joo Choi, Youn Soo Lee, Young Shin Kim, Kyo Young Kim, Chang Suk Kang, Sang In Shim
Korean J Pathol. 1998;32(11):1039-1041.
  • 1,753 View
  • 10 Download
AbstractAbstract
Heterotopic brain tissue is a developmental anomaly of neurogenic origin with no malignant potential, and is usually present around the nose of children and infants. So it has been called nasal glioma. But, even more rarely, heterotopic glial tissue may be found in various sites other than nasal cavity, such as the ethmoidal sinus, palate, tonsillar area, pharynx, ear, subcutaneous tissue, lung, and female genital tract. We experienced a more unusual case of a polypoid heterotopic brain tissue in the soft palate in a 3-year-old boy. The mass was microscopically reminiscent of "gliosis" of the central nervous system and interestingly contained choroid plexus focally. The glial nature of the lesion was confirmed by glial fibrillary acidic protein immunostain.
Papillary Adenocarcinoma of Nonpigmented Ciliary Epithelium of the Eye.
Hyun Joo Choi, Yeong Jin Choi, Youn Soo Lee, Eun Jung Lee, Seok Jin Kang, Byung Kee Kim, Sang In Shim
Korean J Pathol. 1998;32(12):1104-1107.
  • 1,638 View
  • 10 Download
AbstractAbstract
Adenocarcinoma of the ciliary epithelium is a rare tumor, usually occuring in elderly patients who have a history of severe ocular trauma or chronic inflammation. We report an adenocarcinoma of the nonpigmented ciliary epithelium found within the phthisical globe of a 36-year-old female whose eye had been loss of vision since infancy. The mass, measured 4.0 x 4.0 cm, was relatively limited by sclera but had invasion to posterior portion. Histologically, the tumor was a compact mass which consisted of tubular and papillary structures with foci of the pleomorphic area. Strands of cells and individual cells were invested with thick basement membrane that have positivity for periodic acid-Schiff stain. Immunohistochemical staining showed strong reactivity for cytokeratin and epithelial membrane antigen, and focal for neuron-specific enolase and S-100 protein.
Cytologic Features of Adenoma Malignum of the Uterine Cervix: A Case Report.
Hyun Joo Choi, Young Shin Kim, Kyo Young Lee, Chang Suk Kang, Sang In Shim
Korean J Cytopathol. 1998;9(2):201-206.
  • 1,850 View
  • 22 Download
AbstractAbstract PDF
Adenoma malignum is an extremely well-differentiated variant of cervical adeno carcinoma in which the cells composing the tumor lack the typical cytological features of malignancy. The prognosis of this rare tumor is poor in spite of high degree of differentiation. The cytologic characteristics are extremely bland, so frequently make a confusion of adenoma malignum with endocervical glandular hyperplasia. We report a case of adenoma malignum in a 36-year-old woman who complained of mucoid vaginal discharge and vaginal bleeding. The cervicovaginal smear showed endocervical cells exhibiting a spectrum of atypical changes. The cells were arranged in multilayered strips and monolayered sheets. Individual cells ranged from cuboidal to columnar; typically the columnar cells had abundant lacy or vacuolated cytoplasm. The smear showed the majority of only atypical cells and small numbers of frankly malignant cells.
Original Article
The Cytologic Analysis of Microinvasive Squamous Cell Carcinoma of the Uterine Cervix on Cervical Smear .
Hyun Joo Choi, In Ae Park
Korean J Cytopathol. 2001;12(1):31-37.
  • 2,083 View
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AbstractAbstract PDF
While cytologic characteristics of squamous dysplasia, carcinoma in situ, and invasive squamous cell carcinoma of the uterine cervix are well documented, relatively few studies have dealt with the cellular features of microinvasive carcinoma. In order to describe the cellular characteristics of microinvasive squamous cell carcinoma, we retrospectively reviewed 45 cervovaginal smears(15 carcinoma in situ, 15 microinvasive cancer, 15 invasive cancer) which were confirmed by histologic examination of specimens obtained by hysterectomy at the Seoul National University Hospital during 5 years from 1995 to 1999. The cytologic features about tumor diathesis, inflammatory background, cell arrangement, anisonucleosis, nuclear membrane irregularity, nuclear chromatin pattern, and nucleoli were observed. The cytologic characteristics of microinvasive squamous cell carcinoma of the uterine cervix are syncytial pattern, mild tumor diathesis, the irregularity of nuclear membrane, irregularly distributed nuclear chromatin, and occurrence of micronucleoli. But, correlation between the depth of invasion and the cytologic feature had limited value.
Case Report
Fine Needle Aspiration Cytological Findings of Angioimmunoblastic T-cell Lymphoma : A Brief Case Report.
Ji Han Jung, Hyun Joo Choi, Jinyoung Yoo, Seok Jin Kang, Chang Suk Kang, Kyo Young Lee
Korean J Cytopathol. 2006;17(2):159-161.
  • 1,746 View
  • 35 Download
AbstractAbstract PDF
Recently, we experienced a case of Angioimmunoblastic T-cell lymphom (AITL) in a 60-year-old man presented with lymphadenopathy, which is first cytological report in Korea. The cytological features showed a heterogeneous population of small to medium-sized lymphocytes, immunoblasts, and plasma cells. Characteristically, there were also a distinct population of follicular dendritic cells admixed with lymphoid cells, forming the so-called dendritic cell-lymphocyte complexes. Histological features showed the classic morphologic features of AITL. Recognition of the characteristic cytological features can suggest the possibility of AITL.

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