Journal of Pathology and Translational Medicine

Original Articles

Polo-like kinase 4 as a potential predictive biomarker of chemoradioresistance in locally advanced rectal cancer: Hyunseung Oh, Soon Gu Kim, Sung Uk Bae, Sang Jun Byun, Shin Kim, Jae-Ho Lee, Ilseon Hwang, Sun Young Kwon, Hye Won Lee; J Pathol Transl Med. 2022;56(1):40-47. Published online November 16, 2021; DOI: https://doi.org/10.4132/jptm.2021.10.07

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Abstract PDF Supplementary Material: Background
Polo-like kinase 4 (PLK4) is a serine/threonine protein kinase located in the centriole of the chromosome during the cell cycle. PLK4 overexpression has been described in a variety of many common human epithelial tumors. Conversely, PLK4 acts as a haploinsufficient tumor suppressor in some situations, highlighting the importance of strict regulation of PLK4 expression, activity, and function. Meanwhile, the importance of chemoradiation resistance in rectal cancer is being emphasized more than ever. We aimed to analyze PLK4 expression and the tumor regression grade (TRG) in patients with rectal cancer, treated with chemoradiotherapy (CRT).
Methods
A retrospective study was conducted on 102 patients with rectal cancer who received preoperative CRT. Immunohistochemistry for PLK4 in paraffin-embedded tissue was performed from the biopsy and surgical specimens.
Results
We found significant association between high expression of PLK4 and poor response to neoadjuvant CRT (according to both Mandard and The Korean Society of Pathologists TRG systems) in the pre-CRT specimens. Other clinicopathologic parameters did not reveal any correlation with PLK4 expression.
Conclusions
This study revealed an association between high expression of PLK4 in the pre-CRT specimens and TRG. Our results indicated that PLK4 could potentially be a new predictor for CRT effect in patients with rectal cancer.

A multicenter study of interobserver variability in pathologic diagnosis of papillary breast lesions on core needle biopsy with WHO classification: Hye Ju Kang, Sun Young Kwon, Ahrong Kim, Woo Gyeong Kim, Eun Kyung Kim, Ae Ree Kim, Chungyeul Kim, Soo Kee Min, So Young Park, Sun Hee Sung, Hye Kyoung Yoon, Ahwon Lee, Ji Shin Lee, Hyang Im Lee, Ho Chang Lee, Sung Chul Lim, Sun Young Jun, Min Jung Jung, Chang Won Jung, Soo Youn Cho, Eun Yoon Cho, Hye Jeong Choi, So Yeon Park, Jee Yeon Kim, In Ae Park, Youngmee Kwon; J Pathol Transl Med. 2021;55(6):380-387. Published online October 6, 2021; DOI: https://doi.org/10.4132/jptm.2021.07.29

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Background
Papillary breast lesions (PBLs) comprise diverse entities from benign and atypical lesions to malignant tumors. Although PBLs are characterized by a papillary growth pattern, it is challenging to achieve high diagnostic accuracy and reproducibility. Thus, we investigated the diagnostic reproducibility of PBLs in core needle biopsy (CNB) specimens with World Health Organization (WHO) classification.
Methods
Diagnostic reproducibility was assessed using interobserver variability (kappa value, κ) and agreement rate in the pathologic diagnosis of 60 PBL cases on CNB among 20 breast pathologists affiliated with 20 medical institutions in Korea. This analysis was performed using hematoxylin and eosin (H&E) staining and immunohistochemical (IHC) staining for cytokeratin 5 (CK5) and p63. The pathologic diagnosis of PBLs was based on WHO classification, which was used to establish simple classifications (4-tier, 3-tier, and 2-tier).
Results
On WHO classification, H&E staining exhibited ‘fair agreement’ (κ = 0.21) with a 47.0% agreement rate. Simple classifications presented improvement in interobserver variability and agreement rate. IHC staining increased the kappa value and agreement rate in all the classifications. Despite IHC staining, the encapsulated/solid papillary carcinoma (EPC/SPC) subgroup (κ = 0.16) exhibited lower agreement compared to the non-EPC/SPC subgroup (κ = 0.35) with WHO classification, which was similar to the results of any other classification systems.
Conclusions
Although the use of IHC staining for CK5 and p63 increased the diagnostic agreement of PBLs in CNB specimens, WHO classification exhibited a higher discordance rate compared to any other classifications. Therefore, this result warrants further intensive consensus studies to improve the diagnostic reproducibility of PBLs with WHO classification.

Citations

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Invasive papillary carcinoma of the breast
Shijing Wang, Qingfu Zhang, Xiaoyun Mao
Frontiers in Oncology.2024;[Epub] CrossRef
Recommendations for Performance Evaluation of Machine Learning in Pathology: A Concept Paper From the College of American Pathologists
Matthew G. Hanna, Niels H. Olson, Mark Zarella, Rajesh C. Dash, Markus D. Herrmann, Larissa V. Furtado, Michelle N. Stram, Patricia M. Raciti, Lewis Hassell, Alex Mays, Liron Pantanowitz, Joseph S. Sirintrapun, Savitri Krishnamurthy, Anil Parwani, Giovann
Archives of Pathology & Laboratory Medicine.2024; 148(10): e335. CrossRef
Encapsulated papillary carcinoma of the breast: A single institution experience
Liang Xu, Qixin Mao, Qiuming Liu, Yufeng Gao, Lihua Luo, Chungen Guo, Wei Qu, Ningning Yan, Yali Cao
Oncology Letters.2023;[Epub] CrossRef
High-risk and selected benign breast lesions diagnosed on core needle biopsy: Evidence for and against immediate surgical excision
Aparna Harbhajanka, Hannah L. Gilmore, Benjamin C. Calhoun
Modern Pathology.2022; 35(11): 1500. CrossRef

Case Study

Bile Granuloma Mimicking Peritoneal Seeding: A Case Report: Hasong Jeong, Hye Won Lee, Hye Ra Jung, Ilseon Hwang, Sun Young Kwon, Yu Na Kang, Sang Pyo Kim, Misun Choe; J Pathol Transl Med. 2018;52(5):339-343. Published online July 16, 2018; DOI: https://doi.org/10.4132/jptm.2018.06.02

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Abstract PDF

Laparoscopic cholecystectomy is a widely used treatment method for most cholelithiasis and is a relatively safe procedure. Foreign body granulomatous reaction to bile or gallstone spillage during laparoscopic cholecystectomy has rarely been reported. We report a case of bile granuloma after laparoscopic cholecystectomy, which mimicked peritoneal seeding. A 59-year-old Korean man presented with right upper quadrant pain. He underwent laparoscopic cholecystectomy for acute cholecystitis with cholelithiasis. Pathologic examination revealed an incidental adenocarcinoma invading the lamina propria with acute cholecystitis and cholelithiasis. After 3 months, follow-up abdominal computed tomography revealed a subhepatic nodule, which showed hypermetabolism on positron emission tomography–computed tomography. Suspecting localized peritoneal seeding, wedge resection of the liver, wedge resection of the transverse colon, and omentectomy were performed. Pathologic examination of the resected specimens revealed multiple bile granulomas. Awareness of bile granuloma mimicking malignancy is noteworthy for patient management to reduce unnecessary procedure during postoperative surveillance.

Citations

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A mimic of peritoneal metastatic disease, multifocal intraabdominal foreign body granulomas secondary to feculent peritonitis
Damien Gibson, Christo Joseph, Diarmid P. Foulis, Christophe R. Berney
ANZ Journal of Surgery.2024; 94(4): 763. CrossRef
Practices and Attitudes of Surgeons With Regard to Spilled Gallstones During Laparoscopic Cholecystectomy: A Cross-Sectional Study From Saudi Arabia
Mohammed Alfehaid, Moath Aljohani, Sajad A Salati , Shoug Alaodah, Wejdan Alresheedi, Raghad Almarshud
Cureus.2024;[Epub] CrossRef
Spilled gallstone mimicking intra-abdominal seeding of gallbladder adenocarcinoma: A case report
Cheng-Ken Huang, Ruey-Hwa Lu, Chien-Cheng Chen, Po-Chun Chen, Wen-Chang Hsu, Meng-Jui Tsai, Chin-Tsung Ting
World Journal of Gastrointestinal Surgery.2024; 16(2): 622. CrossRef
Peritoneal bile granuloma formation at the site of caesarean surgical scar
Lila Marshall, Sharlin Varghese, Mary Ciranni-Callon
Journal of Case Reports and Images in Obstetrics and Gynecology.2024; 10(2): 6. CrossRef
Biliary Granulomatous Peritoneal Reaction as Consequence of Cholecystectomy: Case Report and Literature Review
Giuseppe Tarantino, Denise Menghini, Maria Eva Argenziano, Miriam Palmieri, Alessandra Mandolesi, Enrico Dalla Bona, Antonio Benedetti, Mario Guerrieri, Maria Giovanna Danieli
SN Comprehensive Clinical Medicine.2023;[Epub] CrossRef
Foreign body reaction mimicking local recurrence from polyactide adhesion barrier film after laparoscopic colorectal cancer surgery
Tien-Chan Hsieh, Chao-Wen Hsu
Medicine.2022; 101(5): e28692. CrossRef
Spilled gallstones after laparoscopic cholecystectomy: a systematic review
Sajad Ahmad Salati, Mohammed Alfehaid, Saleh Alsuwaydani, Lamees AlSulaim
Polish Journal of Surgery.2022; 94(4): 1. CrossRef
Foreign body granulomas mimic peritoneal dissemination caused by incarcerated femoral hernia perforation: A case report
Shinpei Ogino, Tatsuya Matsumoto, Yosuke Kamada, Noriaki Koizumi, Hiroshi Fujiki, Kenji Nakamura, Takeshi Yamano, Chouhei Sakakura
World Journal of Clinical Oncology.2021; 12(11): 1083. CrossRef

Brief Case Report

Apocrine Carcinoma of the Axilla Associated with Extramammary Paget’s Disease: A Case Report and Review of the Literature: Hye Ra Jung, Sun Young Kwon, Daegu Son; J Pathol Transl Med. 2015;49(6):535-537. Published online September 17, 2015; DOI: https://doi.org/10.4132/jptm.2015.06.22

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Citations

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Primary Cutaneous Apocrine Carcinoma of Scrotum with Pagetoid Phenomenon
Phong Jhiew Khoo, Adzim Poh Yuen Wen, Siew Cheng Chai
Turkish Journal of Plastic Surgery.2023; 31(1): 27. CrossRef
Axillary masses as clinical manifestations of male sweat gland carcinoma associated with extramammary Paget’s disease and accessory breast carcinoma: two cases report and literature review
Jing Wu, Hongdan Chen, Juanhui Dong, Yong Cao, Wei Li, Fan Zhang, Xiaohua Zeng
World Journal of Surgical Oncology.2022;[Epub] CrossRef
Co-occurrence of apocrine adenocarcinoma and invasive mammary-type ductal carcinoma in extramammary Paget disease of the axilla
Seung Bin Jang, Sung-Eun Kim, Young Ah Kim, Hye Ryeon Choi
Archives of Plastic Surgery.2020; 47(01): 83. CrossRef
Mohs micrographic surgery combined local flaps in treatment of EMPD: A retrospective case
Lili Li, Chen Wang, Minghai Wei, Qitao Huang, Lan Wei, Nannan Pan, Zhi Xie
Dermatologic Therapy.2018; 31(5): e12663. CrossRef
Cutaneous Apocrine Carcinoma With an In Situ Component and Histiocytoid and Signet-Ring Cells
Jérémie Berdugo, Vincent Dumont-Mackay, Sophie Brissy-Lachery, Yves E. Leclerc, Josée Doyon, Andrew Mitchell, Tony Petrella, Delphine Désy
The American Journal of Dermatopathology.2017; 39(6): e76. CrossRef

Case Report

Cavernous Hemangioma of the Uterus in a Postmenopausal Woman: A Case Report.: Hye Ra Jung, Chi Hum Cho, Sang Hun Kwon, Sun Young Kwon; Korean J Pathol. 2011;45(5):520-522.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.5.520

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Abstract PDF

Cavernous hemangioma of the uterus is an uncommon mesenchymal tumor. Most cases have been reported in young, pregnant women and the condition is very rare in a postmenopausal patient. An 81-year-old woman presented with a huge pelvic mass. Abdominal computed tomography and magnetic resonance imaging results suggested a leiomyoma with degenerative change and hemorrhage. Microscopically, large, thick-walled and variable-sized vascular channels were evident in the majority part of myometrium; the lining cells were immunohistochemically reactive for CD31. Vascular tumors of the female genital tract should be cautiously excised due to the profuse intra-operative bleeding. The pathological examination of a hysterectomy specimen is the only method to confirm the diagnosis of this tumor.

Citations

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A rare case report of cervical hemangioma and a comprehensive literature review of 137 cases of cervical and uterine hemangiomas
Maasomeh Farahani, Seyyed‐Ali Hashemi, Sogand Goodarzi, Bardia Hajikarimloo, Farzad Pour‐Ghazi, Shahrzad Noori, Saba Alijani, Armin Khavandegar
International Journal of Gynecology & Obstetrics.2024; 164(2): 421. CrossRef
Cavernous hemangioma of corpus imitating endometrial polyp in a young non‐pregnant woman: A case report study
Ali Emami, Ensiyeh Bahadoran, Fatemeh SamieeRad
Clinical Case Reports.2024;[Epub] CrossRef
Diffuse cavernous hemangioma of the uterus mimicking adenomyosis- A rare case report
Saloni Naresh Shah, N Geetha
Indian Journal of Obstetrics and Gynecology Research.2020; 7(2): 283. CrossRef
Haemangioma- Common Neoplasm in an Unusual Location - A Case Report
Dahlia Joseph, Elizabeth Joseph, Ajitha K
Journal of Evidence Based Medicine and Healthcare.2019; 6(51): 3216. CrossRef

Original Articles

Comparative Study of Relative Value for Diagnostic Procedure of Surgical Pathology in Korea and United States.: Ilseon Hwang, Yu Na Kang, Kun Young Kwon, Sun Young Kwon, Sang Pyo Kim, Sang Sook Lee, Hye Ra Jung, Mi Sun Choe; Korean J Pathol. 2011;45(1):9-14.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.1.9

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Abstract PDF

BACKGROUND
Pathologic examination is a very important diagnostic procedure. It is the most important method to decide the therapeutic plan and to predict the prognosis of cancer patients. The Resource-Based Relative Value Scale (RBRVS) is a schema used to determine how much money medical providers should be paid. In Korea, a modified RBRVS has been used since the year 2000.
METHODS
We researched the July 2010 RBRVS for Korea and the US medicare. The individual Relative Evaluation Index (REI) is defined as the ratio of an individual RBRVS to the mean RBRVS. The REIs of pathologic examination in Korea and America were compared.
RESULTS
For an endoscopic biopsy specimen, the pathologic examination REI in Korea was 55.4% of the American REI. The Korean REI of a prostate biopsy (8 sites) was only 5.7% of the American REI. The Korean REI was 28.1% of the American REI for the hysterectomy for uterine myoma, and the Korean REI was 67.6% of the American REI for resection of stomach or colon cancer.
CONCLUSIONS
The RBRVS of pathologic examination in Korea remains undervalued. Considering the importance of pathologic examination in medicine, the RBRVS in Korea should be increased.

Citations

Citations to this article as recorded by

Diminutive and Small Colorectal Polyps: The Pathologist's Perspective
Yun Kyung Kang
Clinical Endoscopy.2014; 47(5): 404. CrossRef
Early Colorectal Epithelial Neoplasm in Korea: A Multicenter Survey of Pathologic Diagnosis
Yun Kyung Kang, So-Young Jin, Mee Soo Chang, Jung Yeon Kim, Gyeong Hoon Kang, Hye Seung Lee, Jin Hee Sohn, Ho Sung Park, Kye Won Kwon, Mi Jin Gu, Young Hee Maeng, Jong Eun Joo, Haeng Ji Kang, Hee Kyung Kim, Kee-Taek Jang, Mi Ja Lee, Hee Kyung Chang, Joon
Korean Journal of Pathology.2013; 47(3): 245. CrossRef

Expression of MUC1 and MUC4 and Its Prognostic Significance in Non-Small Cell Lung Carcinoma.: Ji Min Jeon, Hye Won Lee, Ji Young Park, Hye Ra Jung, Ilseon Hwang, Sun Young Kwon, Mi Sun Choe, Yu Na Kang, Sang Pyo Kim, Sang Sook Lee, Won Il Choi, Kun Young Kwon; Korean J Pathol. 2010;44(4):397-403.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.4.397

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Abstract PDF

BACKGROUND
Mucin (MUC)1 and MUC4 (MUC1, 4) are high molecular weight glycoproteins expressed in normal and malignant epithelial cells, and these expressions are related to the prognosis of some carcinomas. In non-small cell lung carcinoma (NSCLC), the relationship between MUC1, 4 expressions and their prognostic significance is not well known. We evaluated these relationships in a series of NSCLC: 1) between MUC1, 4 expression levels and histologic subtypes, and 2) between high expression of MUC1, 4 and their prognostic significance.
METHODS
We performed immunohistochemical staining for MUC1, 4 in paraffin-embedded tissues from 165 NSCLC cases arranged in a tissue microarray.
RESULTS
We found a significant correlation between MUC1, 4 expressions and NSCLC histologic subtypes (p < 0.05). High MUC1 expression was characteristic of adenocarcinoma. Low MUC1, 4 expressions were characteristic of squamous cell carcinoma. In adenocarcinoma, we found significant association between diffuse MUC1 expression and short patient survival (p = 0.005). In squamous cell carcinoma, diffuse MUC4 expression showed long patient survival trend (p = 0.128).
CONCLUSIONS
MUC1, 4 expression levels were significantly correlated with NSCLC histologic subtypes. Diffuse MUC1 expression was significantly associated with shortened survival in NSCLC patients, especially in adenocarcinoma.

Citations

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Inhibition of MUC1-C Increases ROS and Cell Death in Mouse Embryonic Stem Cells
Jeong-A Park, Sangkyu Park, Jun-Kyu Choi, Myung-Kwan Han, Younghee Lee
International Journal of Stem Cells.2020;[Epub] CrossRef
Assessing the prognostic significance of MUC4β in mucoepidermoid carcinoma of the salivary glands: An immunohistochemical study
Poonam R. Sawant, Anita Spadigam, Anita Dhupar, Shaheen Syed, Karla Carvalho
Heliyon.2019; 5(11): e02753. CrossRef
Ultrasensitive cytosensing based on an aptamer modified nanobiosensor with a bioconjugate: Detection of human non-small-cell lung cancer cells
Tanveer A. Mir, Jang-Hee Yoon, N.G. Gurudatt, Mi-Sook Won, Yoon-Bo Shim
Biosensors and Bioelectronics.2015; 74: 594. CrossRef
Expression of MUC1 and MUC4 in Gallbladder Adenocarcinoma
Su-Mi Kim, Sun-Ju Oh, Bang Hur
Korean Journal of Pathology.2012; 46(5): 429. CrossRef
MUC4 and MUC1 Expression in Adenocarcinoma of the Stomach Correlates with Vessel Invasion and Lymph Node Metastasis: An Immunohistochemical Study of Early Gastric Cancer
Yukihiro Tamura, Michiyo Higashi, Sho Kitamoto, Seiya Yokoyama, Masahiko Osako, Michiko Horinouchi, Takeshi Shimizu, Mineo Tabata, Surinder K. Batra, Masamichi Goto, Suguru Yonezawa, Fazlul H. Sarkar
PLoS ONE.2012; 7(11): e49251. CrossRef
Prognostic significance of membrane-associated mucins 1 and 4 in gastric adenocarcinoma
ILSEON HWANG, YU NA KANG, JIN YOUNG KIM, YOUNG ROK DO, HONG SUK SONG, KEON UK PARK
Experimental and Therapeutic Medicine.2012; 4(2): 311. CrossRef

An Analysis of Histopathologic Evaluation of Lung Carcinomas in Last Ten Years.: Ji Min Jeon, Sun Young Kwon, Eun Sook Chang, Young Jun Jeon, Kun Young Kwon; Korean J Pathol. 1999;33(7):483-489.

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Abstract PDF: Lung cancer is one of the most common types of malignancy in western nations with serious health problem, and it has become the leading cause of cancer death of males, second only to stomach cancer, in Korea. A review of the histopathology of 1363 cases (1231 patients) of lung carcinoma, diagnosed at the Keimyung University Medical center from 1987 to 1996, was performed to reclassify the type of carcinomas and to investigate the change in the distribution of histologic types of lung carcinoma according to age, sex and year. Among the 1363 cases, 132 patients underwent a surgical operation after biopsy. The diagnosis of each case was proven by histopathologic analysis of surgical specimens (13.2%) and biopsy materials (86.8%). The histologic types in our study were basically based on modified WHO classification (1982) and on new WHO classification (1999). The classification of small cell carcinoma was based on International Association for the Small Cell Lung Cancer (IASLC, 1988). Of the 1231 patients with lung carcinoma, 1012 were male and 219 were female (male to female ratio was 3.6:1). According to the analysis of age distribution, the most prevalent age group was 60~69 years in both sex as (n=516, 42.0%). Changing trends in sex distribution of lung carcinoma patients showed that the proportion of men had decreased throughout the years, whereas the proportion of women had significantly increased. Histologically, squamous cell carcinoma was the most common (n=624, 50.7%), followed by small cell carcinoma (21.1%), adenocarcinoma (18.1%), large cell undifferentiated carcinoma (2.1%), adenosquamous carcinoma (0.4%), and large cell neuroendocrine carcinoma (0.4%), in order of frequency. In men, squamous cell carcinoma was the most frequent type (55.1%). In women, adenocarcinoma was the most frequent type (39.7%). In both sexes, adenocarcinoma was the most common type in patients under the age of 40 (n=12, 41.4%), while squamous cell carcinoma proved the most frequent type in patients over the age of 40 (n=617, 51.3%). Changing trends of histologic types of lung cancer showed that the incidences of squamous cell carcinoma had significantly decreased throughout the years, whereas those of adenocarcinoma and small cell carcinoma had increased. In conclusion, the results showing increases in the percentage of female patients and in the number of cases of adenocarcinoma were noteworthy, and well correlated with other related reports.

Case Report

Metastatic Alveolar Soft Part Sarcoma Presented with a Dura Mass: A Case Report.: Sun Young Kwon, Hyun Chang Joo, Kun Young Kwon, Sang Sook Lee, Chul Ho Sohn, Man Bin Yim, Sang Pyo Kim; Korean J Pathol. 2001;35(2):180-183.

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Abstract PDF: Alveolar soft part sarcoma, accounting for less than 1% of all soft tissue sarcomas, is known for late metastases to the lung, bone and brain. We have examined a case of metastatic alveolar soft part sarcoma to the brain in a 34-year-old woman. Computed tomography of the brain revealed a well enhancing dura based mass of the left temporal area. The patient had a previous history of surgery for alveolar soft part sarcoma from the right thigh at the age of 24 years. She underwent total removal of the dural mass under the clinical impression of the meningioma. Grossly, a well-circumscribed, pale tan and solid mass was 3.4 x 3.2 x 2.4 cm and easily detached from the attached dura. Histologically, the tumor showed typical features of alveolar soft part sarcoma. Immunohistochemically, tumor cells were positive for muscle related antibodies. Ultrastructural examination showed rod-shaped membrane bound crystals and electron-dense granules in the cytoplasm of tumor cells.

Original Articles

Expression of p27kip1 and Cyclin D1 in Serous Epithelial Ovarian Tumors.: Sun Young Kwon, Eun Sook Chang, Kun Young Kwon, Kwan Kyu Park, Soo Kyung Kim; Korean J Pathol. 2001;35(3):220-225.

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Abstract PDF: BACKGROUND
p27kip1 is a member of the Cip/Kip family of the cyclin-dependent kinase inhibitors and is a potential tumor suppressor gene. Decreased expression of p27kip1 is associated with high histologic grade and poor prognosis in a variety of human tumors.
METHODS
Sixty-six cases of serous epithelial ovarian tumors were investigated by immunohistochemical staining for p27kip1, cyclin D1, and Ki-67. Clinicopathologic parameters (WHO classification, histologic grade and FIGO stage) were compared with the incidence of p27kip1, cyclin D1 and Ki-67 protein expression in ovarian serous tumors.
RESULTS
Reduced expression of p27kip1 was found more freguently in serous cystadenocarcinoma than in serous cystadenoma and borderline malignancy (p<0.05). The decreased expression of p27kip1 was correlated with a high histologic grade and an advanced FIGO stage. Overexpression of cyclin D1 is associated with borderline malignancy and grade I serous cystadenocarcinoma. An inverse relationship was observed between the p27kip1 protein and the Ki-67 labeling index within serous cystadenocarcinoma, but it was not significant.
CONCLUSIONS
Reduced expression of p27kip1 protein plays an important role in the biologically aggressive behavior of serous epithelial ovarian tumors and might represent a useful prognostic marker for predicting the recurrence in primary ovarian tumors.

Early Detection of Metastasis by Immunohistochemistry in Uterine Cervical Carcinoma.: Kwan Kyu Park, Sun Young Kwon, Eun Sook Chang, Moon Young Jegal, Sang Mi Han, Soon Do Cha, In Sook Han; Korean J Pathol. 2001;35(5):391-340.

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Abstract PDF: BACKGROUND
Adhesion molecules are important in the maintenance of normal epithelial structure, and altered expression of these molecules may be important in epithelial tumors, particularly in the processes of invasion and metastasis.
METHODS
We have examined the expression of E-cadherin, cathepsin-D, CD44, CD44v6, nm23 and transforming growth factor-1 (TGF-1) proteins in the cervical squamous cell carcinoma to evaluate the prognostic significance of these molecules.
RESULTS
Immunostain for E-cadherin was highly expressed in the majority of cases of cervical carcinomatous lesions (85.7-100%), but cathepsin-D was very low (7.1-32%). Immunostain for CD44 showed a lower expression in invasive carcinoma with and without metastasis (50.4 and 52.2%) than in carcinoma in situ (68.0%). CD44v6 protein showed some controversy of expression between invasive carcinoma with metastasis (35.7%) without metastasis (56.5%). Staining for nm23 was observed in the high expression of invasive lesions (85.7%). TGF-1 and C-erbB-2 protein were highly expressed, especially in the microinvasive carcinoma (81.8%, 42.8%, respectively).
CONCLUSIONS
These results suggest that CD44 and CD44v6 were not highly expressed in the invasive squamous carcinoma of the uterine cervix. However, it is notable that TGF-1 and c-erbB-2 in the microinvasive carcinoma and nm23 in invasive carcinoma were highly expressed compared to these of the other lesions of the uterine cervix.

Case Reports

Fine Needle Aspiration Cytology of Invasive Micropapillary Carcinoma of the Breast: Report of four Cases.: Sun Young Kwon, Hae Ra Jung, Yu Na Kang, Sang Pyo Kim, Kun Young Kwon, Sang Sook Lee; Korean J Cytopathol. 2004;15(2):106-111.

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Abstract PDF: Invasive micropapillary carcinoma (IMPCa) is a rare variant of invasive ductal carcinoma of the breast. This variant is associated with a set of peculiar cytological findings and aggressive biological behaviors. In most reported cases, IMPCa has involved massive axillary lymph node metastases at the time of diagnosis. We experienced four cases of cytological features of IMPCa, all of which were verified by histological examination. Fine needle aspiration cytology (FNAC) revealed malignant epithelial cells, which formed small, oval to angulated papillary clusters, which lacked central fibrovascular cores. The histological findings of the four cases revealed both pure and mixed forms of IMPCa, composed of cohesive malignant epithelial cells, surrounded by distinctive clear spaces and separated by thin fibrous septa. All patients evidenced axillary lymph node metastases at the time of diagnosis. It is important to identify the peculiar cytological findings which would differentiate IMPCa from other diseases.

Deep Nabothian Cyst of Uterine Cervix: A Case Report.: Hye Ra Jung, Yu Na Kang, Sun Young Kwon, Hoon Kyu Oh; Korean J Pathol. 2004;38(4):273-275.

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Abstract PDF: Herein, a case of nabothian cysts, extending into the deep cervical wall is reported. The radiologic and clinical examinations were suggestive of adenoma malignum. The cysts were incidentally found in a 42 year-old woman with abnormal uterine bleeding of about ten days duration. The patient underwent a total abdominal hysterectomy. A gross examination of the cervix revealed multiple mucin-filled cysts that extended almost to the serosa. On microscopic examination, the cysts were lined by columnar to flattened endocervical type cells, which are usually found in nabothian cysts. No atypical features or mitotic activity were noted. A deep nabothian cyst is a rare benign lesion of the cervix that should be distinguished from a cystically dilated adenoma malignum.

Original Article

Reducing Effect of Angiotensin-1 Converting Enzyme Inhibitor (Captopril) in Fibrosis of Radiation Induced Lung Injury.: Kun Young Kwon, Hae Ra Jung, Sun Young Kwon, Jin Hee Kim, Ok Bae Kim; Korean J Pathol. 2004;38(3):145-156.

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Abstract PDF: BACKGROUND
The captopril reduces radiation induced lung injury and fibrosis. We designed a study to evaluate the antifibrogenic effect of Captopril in radiation induced lung injury.
METHODS
Fifty Sprague-Dawley rats were divided into radiation group (I) (n=30) and radiation plus captopril group (II) (n=15). The rats were sacrificed at 12 hours and 11 weeks after radiation. We examined light microscopic, immunohistochemical and electron microscopic features in each groups.
RESULTS
In Group I, the lungs showed acute lung injury at 12 h. The lungs showed patchy fibrosis with collagen deposits at 11 weeks. The severity of the alveolar injury and fibrosis was correlated with radiation doses. The Group II showed less severe lung fibrosis than Group I. The mean numbers of mast cells and myofibroblasts of Group II were lower than Group I (p< 0.05). The TNF-alpha and TGF-beta were higher expressed according to radiation doses in Group I, and less prominent in Group II. Ultrastructurally, the alveolar cell injury and fibrosis were less severe in Group II. The TUNEL stains showed higher expressions according to radiation doses in Group I, and expressed in Group II.
CONCLUSIONS
The captopril decreases the number of mast cells and myofibroblasts, reduces collagen deposition and apoptosis of alveolar cells in rat lungs after radiation, and so reduces the degree of pulmonary injury and fibrosis.

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