Journal of Pathology and Translational Medicine

Original Articles

WITHDRAWN:A Clinicopathologic Study of 220 Cases of Pulmonary Sclerosing Pneumocytoma in Korea: A Nationwide Survey: Myunghee Kang, Seung Yeon Ha, Joung Ho Han, Mee Sook Roh, Se Jin Jang, Hee Jin Lee, Heae Surng Park, Geon Kook Lee, Kyo Young Lee, Jin-Haeng Chung, Yoo Duk Choi, Chang Hun Lee, Lucia Kim, Myoung Ja Chung, Soon Hee Jung, Gou Young Kim, Wan-Seop Kim; Received April 4, 2018 Accepted July 9, 2018 Published online July 16, 2018; DOI: https://doi.org/10.4132/jptm.2018.07.10 [Accepted]

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Eosinophils in Colorectal Neoplasms Associated with Expression of CCL11 and CCL24: Hyuck Cho, Sung-Jig Lim, Kyu Yeoun Won, Go Eun Bae, Gou Young Kim, Ji Won Min, Byeong-joo Noh; J Pathol Transl Med. 2016;50(1):45-51. Published online December 14, 2015; DOI: https://doi.org/10.4132/jptm.2015.10.16

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Background
A decrease in the number of tissue eosinophils is known to reflect the malignancy potential of neoplastic lesions and even prognosis. Increased levels of the chemokines CCL11 and CCL24 in serum and tissue are also known to have diagnostic value as serum tumor markers or prognostic factors. The aim of this study was to evaluate the correlation between the degree of tissue eosinophilia and the expression of these chemokines in the glandular and stromal cells of colorectal neoplastic lesions ranging from benign to malignant tumors. Methods: We counted the number of infiltrating eosinophils in neoplastic lesion tissue and we evaluated the expression of CCL11 and CCL24 in glandular cells and stromal cells by immunohistochemical staining. Results: The results showed that the number of eosinophils decreased significantly and the expression of CCL11 and CCL24 in glandular cells decreased with tumor progression, whereas the stromal expression of CCL11 and CCL24 appeared to increase. Conclusions: The discrepancy in CCL11 and CCL24 expression between glandular cells and stromal cells might shed light on how colorectal cancer evades the immune system, which would enable further development of immunotherapies that target these chemokines. Further research on eosinophil biology and the expression pattern of chemokines in tumor cells is needed.

Citations

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Jinna Li, Jiapeng Yang, Rui Xing, Ying Wang
Aging.2023; 15(7): 2554. CrossRef
Potential Mechanisms of Melatonin in Osteosarcoma and Bone-Related Neoplasms: Updated Review
Parisa Maleki Dana, Fatemeh Sadoughi, Russel J. Reiter, Bahman Yousefi, Zatollah Asemi
Mini-Reviews in Medicinal Chemistry.2023; 23(3): 290. CrossRef
Epitope Mapping of Anti-Mouse CCR3 Monoclonal Antibodies (C3Mab-6 and C3Mab-7)
Nami Tateyama, Teizo Asano, Tomohiro Tanaka, Yu Isoda, Yuki Okada, Hiyori Kobayashi, Guanjie Li, Ren Nanamiya, Takeo Yoshikawa, Mika K. Kaneko, Hiroyuki Suzuki, Yukinari Kato
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Improved colorectal cancer screening by adding noninvasive serum-based biomarkers
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Journal of Translational Medicine.2023;[Epub] CrossRef
A Novel Gene Signature Associated with Protein Post-translational Modification to Predict Clinical Outcomes and Therapeutic Responses of Colorectal Cancer
Jun Liu, Peng Zhu
Molecular Biotechnology.2023;[Epub] CrossRef
Assessing serum cytokine profiles in inflammatory breast cancer patients using Luminex® technology
Maryem Bessaad, Azza Habel, Mariem Hadj Ahmed, Weili Xu, Mouna Stayoussef, Hanen Bouaziz, Monia Hachiche, Amel Mezlini, Anis Larbi, Besma Yaacoubi-Loueslati
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Frontiers in Oncology.2022;[Epub] CrossRef
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Medina Mamtimin, Akif Pinarci, Chao Han, Attila Braun, Hans-Joachim Anders, Thomas Gudermann, Elmina Mammadova-Bach
Frontiers in Oncology.2022;[Epub] CrossRef
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Wang Da, Wu Yinhang, Zhuang Jing, Xu Jiamin, Gao Xinyi, Song Yongmao, Pan Yuefen
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Cancers.2022; 14(13): 3141. CrossRef
Eosinophils Decrease Pulmonary Metastatic Mammary Tumor Growth
Rachel A. Cederberg, Sarah Elizabeth Franks, Brennan J. Wadsworth, Alvina So, Lisa R. Decotret, Michael G. Hall, Rocky Shi, Michael R. Hughes, Kelly M. McNagny, Kevin L. Bennewith
Frontiers in Oncology.2022;[Epub] CrossRef
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Qing Lai, Haifei Feng, Shuli Yang
Evidence-Based Complementary and Alternative Medicine.2022; 2022: 1. CrossRef
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Izabela Siemińska, Ewa Poljańska, Jarek Baran
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CCL24 Protects Renal Function by Controlling Inflammation in Podocytes
Youdi Wang, Xue Wu, Mengya Geng, Jiamin Ding, Kangjia Lv, Hui Du, Jiahui Ding, Wenjun Pei, Xin Hu, Jing Gu, Lizhuo Wang, Yao Zhang, Jialin Gao, Roberta Rizzo
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Primary tumors from mucosal barrier organs drive unique eosinophil infiltration patterns and clinical associations
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OncoImmunology.2021;[Epub] CrossRef
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Wei-Qing Liu, Wen-Liang Li, Shu-Min Ma, Lei Liang, Zhi-Yong Kou, Jun Yang
Translational Oncology.2021; 14(3): 101011. CrossRef
Metastasis-Entrained Eosinophils Enhance Lymphocyte-Mediated Antitumor Immunity
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Sharon Grisaru-Tal, Michal Itan, Amy D. Klion, Ariel Munitz
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Eotaxins and Their Receptor in Colorectal Cancer—A Literature Review
Monika Zajkowska, Barbara Mroczko
Cancers.2020; 12(6): 1383. CrossRef
Eosinophilic peritonitis with colon cancer: a case report
Ryo Ataka, Hirokazu Tanaka, Shintaro Yagi, Kei Yamane, Kenji Yoshino, Tomoyuki Miyauchi, Tomoaki Yoh, Keiichi Arafuka, Shinichi Fujita, Akihiko Hamada, Bunji Endo, Shinji Uemoto
BMC Gastroenterology.2020;[Epub] CrossRef
Hypoxia Alters the Expression of CC Chemokines and CC Chemokine Receptors in a Tumor–A Literature Review
Jan Korbecki, Klaudyna Kojder, Katarzyna Barczak, Donata Simińska, Izabela Gutowska, Dariusz Chlubek, Irena Baranowska-Bosiacka
International Journal of Molecular Sciences.2020; 21(16): 5647. CrossRef
CC Chemokines in a Tumor: A Review of Pro-Cancer and Anti-Cancer Properties of the Ligands of Receptors CCR1, CCR2, CCR3, and CCR4
Jan Korbecki, Klaudyna Kojder, Donata Simińska, Romuald Bohatyrewicz, Izabela Gutowska, Dariusz Chlubek, Irena Baranowska-Bosiacka
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В.В. Новицкий, К.И. Янкович, Ю.В. Колобовникова, А.И. Дмитриева, О.И. Уразова, И.Л. Пурлик, Л.А. Кудяков, С.П. Чумакова
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Analysis of Mutations in Epidermal Growth Factor Receptor Gene in Korean Patients with Non-small Cell Lung Cancer: Summary of a Nationwide Survey: Sang Hwa Lee, Wan Seop Kim, Yoo Duk Choi, Jeong Wook Seo, Joung Ho Han, Mi Jin Kim, Lucia Kim, Geon Kook Lee, Chang Hun Lee, Mee Hye Oh, Gou Young Kim, Sun Hee Sung, Kyo Young Lee, Sun Hee Chang, Mee Sook Rho, Han Kyeom Kim, Soon Hee Jung, Se Jin Jang, The Cardiopulmonary Pathology Study Group of Korean Society of Pathologists; J Pathol Transl Med. 2015;49(6):481-488. Published online October 13, 2015; DOI: https://doi.org/10.4132/jptm.2015.09.14

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Abstract PDF

Background
Analysis of mutations in the epidermal growth factor receptor gene (EGFR) is important for predicting response to EGFR tyrosine kinase inhibitors. The overall rate of EGFR mutations in Korean patients is variable. To obtain comprehensive data on the status of EGFR mutations in Korean patients with lung cancer, the Cardiopulmonary Pathology Study Group of the Korean Society of Pathologists initiated a nationwide survey. Methods: We obtained 1,753 reports on EGFR mutations in patients with lung cancer from 15 hospitals between January and December 2009. We compared EGFR mutations with patient age, sex, history of smoking, histologic diagnosis, specimen type, procurement site, tumor cell dissection, and laboratory status. Results: The overall EGFR mutation rate was 34.3% in patients with non-small cell lung cancer (NSCLC) and 43.3% in patients with adenocarcinoma. EGFR mutation rate was significantly higher in women, never smokers, patients with adenocarcinoma, and patients who had undergone excisional biopsy. EGFR mutation rates did not differ with respect to patient age or procurement site among patients with NSCLC. Conclusions: EGFR mutation rates and statuses were similar to those in published data from other East Asian countries.

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Brief Case Report

Ovarian Remnant Syndrome at the Trochar Site: A Report of a Rare Complication Following Laparoscopic Ovarian Surgery: Ki Yong Na, Ji-Youn Sung, Kyu Yeoun Won, Gou Young Kim, Sung-Jig Lim, Suk-Hwan Lee; Korean J Pathol. 2013;47(3):304-306. Published online June 25, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.3.304

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Ting-ting Yao, Shao-jie Zhao, Bing Zhang
BMC Women's Health.2023;[Epub] CrossRef
Clear-Cell Carcinoma Developing in Remnant Ovary After Hysterectomy and Bilateral Salpingo-Oophorectomy for Endometriosis
Satoshi Ichigo, Hiroshi Takagi, Kazutoshi Matsunami, Takayuki Murase, Tsuneko Ikeda, Atsushi Imai
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ATSUSHI IMAI, KAZUTOSHI MATSUNAMI, HIROSHI TAKAGI, SATOSHI ICHIGO
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Case Study

Extrapelvic Uterus-like Masses Presenting as Colonic Submucosal Tumor: A Case Study and Review of Literature: Ki Yong Na, Gou Young Kim, Kyu Yeoun Won, Hyun-Soo Kim, Sang Won Kim, Chi Hoon Lee, Jae Myung Cha; Korean J Pathol. 2013;47(2):177-181. Published online April 24, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.2.177

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Abstract PDF

A uterus-like mass (ULM) is a central cavity lined by endometrial glands and stroma and surrounded by thick-walled smooth muscles. To date, 31 cases of ULM have been reported in the English literature. ULM typically presents as a single mass and is located in the pelvic cavity. We report here a very rare case of multiple extrapelvic ULMs involving the cecum, descending colon, and mesocolon. After extensive literature research, our case appears to be the first case of multiple ULMs found in extrapelvic sites and the first case of ULM in the colon. The present case suggests that ULM should be included in the differential diagnosis of colonic submucosal tumors in female patients with chronic abdominal pain or menstruation-associated symptoms.

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Indian Journal of Radiology and Imaging.2021; 31(03): 545. CrossRef
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P.G. Paul, Gunjan Gulati, Hemant Shintre, Sumina Mannur, George Paul, Santwan Mehta
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Jian He, Jie Xu, Hong-Yan Zhou
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International Journal of Surgical Pathology.2014; 22(5): 421. CrossRef

Case Reports

Angiomyomatous Hamartoma of Popliteal Lymph Nodes Occurring in Association with Diffuse Pigmented Villonodular Synovitis of Knee.: Hyun Soo Kim, Ki Yong Na, Jae Hoon Lee, Nam Su Cho, Gou Young Kim, Sung Jig Lim; Korean J Pathol. 2011;45:S58-S61.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.S1.S58

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Abstract PDF: We report the first case of an angiomyomatous hamartoma (AH) of the popliteal lymph nodes (LNs) occurring in association with diffuse pigmented villonodular synovitis (PVNS) of the knee. AH is a rare benign vascular disease with a predisposition for the LNs of the inguinal region. Twenty-five cases of AH have been reported to date; however, the precise pathogenesis is still undetermined. In the present case, an open synovectomy revealed two of three popliteal LNs in close proximity to the extra-articular component of diffuse PVNS. These LNs demonstrated irregularly distributed thick-walled blood vessels in the hilum. These vessels extended into the medulla and cortex and were associated with haphazardly arranged smooth muscle cells in the sclerotic stroma. These findings are compatible with an AH. Our observations raise the possibility that AH of the popliteal LNs may represent an abnormal proliferative reaction against the inflammatory process caused by PVNS of the knee.

Ectopic Epididymis in Testicular Appendices: Report of Two Cases.: Hyun Soo Kim, Gou Young Kim, Hyung Lae Lee, Youn Wha Kim, Sung Jig Lim; Korean J Pathol. 2011;45:S11-S14.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.S1.S11

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Abstract PDF: We report two cases of ectopic epididymal ducts and efferent ductules in the testicular appendices (TAs) of adult men with normally descended testes. In both cases, a sessile TA was incidentally found at the upper pole of the right testis during the scrotal hydrocelectomy. Microscopically, a few closely arranged tubules were detected within the TA. In the first case, the tubules were lined with a pseudostratified columnar epithelium with numerous, long microvilli, and were surrounded by a smooth muscle coat. In contrast, in the second case, the tubules had a wavy luminal surface, because ciliated columnar cells alternated with groups of cuboidal cells. In both cases, strong CD10 immunoreactivity was observed in the luminal border of the lining epithelium. Surgical pathologists should be aware of the presence of both ectopic epididymal ducts and efferent ductules that can occur in TAs, in order to avoid misinterpretation as transected, functional reproductive structures.

Original Articles

Uncoupling Protein 2 (UCP2) and p53 Expression in Invasive Ductal Carcinoma of Breast.: Kyu Yeoun Won, Gou Young Kim, Youn Wha Kim, Sung Jig Lim, Jeong Yoon Song; Korean J Pathol. 2010;44(6):565-570.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.6.565

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Abstract PDF

BACKGROUND
Uncoupling protein 2 (UCP2) is a recently identified mitochondrial inner membrane anion carrier and a negative regulator of reactive oxygen species production. In this study, we evaluated the characteristics and relationships of UCP2 and p53 expression in breast cancer tissues.
METHODS
Tissue microarray slides from 107 cases of invasive ductal carcinoma of the breast were constructed, UCP2 and p53 immunohistochemical staining was conducted, and clinicopathological correlations were investigated.
RESULTS
UCP2 expression in invasive ductal carcinoma was high in 53 cases (49.5%), while p53 expression in invasive ductal carcinoma was high in 37 cases (34.6%). UCP2 expression was correlated significantly with histological grade (p = 0.038) and mitotic count (p = 0.050). UCP2 expression was correlated significantly with p53 expression in invasive ductal carcinoma of the breast (p = 0.045). UCP2 expression (p = 0.8308) and p53 expression (p = 0.3292) showed no significant difference for the overall survival rate in patients with invasive ductal carcinoma.
CONCLUSIONS
UCP2 expression in invasive ductal carcinoma increased proportionally with histological grade and mitotic count. High UCP2 expression in invasive ductal carcinoma was observed in conjunction with high p53 expression.

Citations

Citations to this article as recorded by

Forkhead box protein A1 inhibits the expression of uncoupling protein 2 in hydrogen peroxide-induced A549 cell line
Lan Song, Zhaojun Xu, Ling Li, Mei Hu, Lijuan Cheng, Lingli Chen, Bo Zhang
Cell Stress and Chaperones.2014; 19(1): 53. CrossRef
New Aspects of Mitochondrial Uncoupling Proteins (UCPs) and Their Roles in Tumorigenesis
Delira Robbins, Yunfeng Zhao
International Journal of Molecular Sciences.2011; 12(8): 5285. CrossRef

Clinicopathological Significance of Invasive Ductal Carcinoma with High Prevalence of CD44(+)/CD24(-/low) Tumor Cells in Breast Cancer.: Ji Youn Sung, Gou Young Kim, Yong Koo Park, Juhie Lee, Youn Wha Kim, Sung Jig Lim; Korean J Pathol. 2010;44(4):390-396.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.4.390

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Abstract PDF

BACKGROUND
Epithelial tumor cells with a CD44(+)/CD24(-/low) immunoprofile may have the ability to cause breast cancer. We studied these cells and their clinicopathological significance.
METHODS
The clinicopathologic findings of 100 invasive ductal carcinoma (IDC) cases and 45 ductal carcinoma in situ (DCIS) cases were reviewed. CD44(+)/CD24(-/low) tumor cells were identified by immunohistochemistry, and their clinicopathological implications in IDC and DCIS were analyzed.
RESULTS
IDC with a high prevalence of CD44(+)/CD24(-/low) tumor cells was significantly associated with larger mass, higher grade, estrogen receptor (ER) negativity, and tumor cells with a higher frequency of metastasis. The proportion of CD44(+)/CD24(-/low) tumor cells in IDC, and its DCIS components was not significantly different, whereas the proportion of CD44(+)/CD24(-/low) tumor cells was higher in DCIS than in the DCIS component of IDC (p < 0.001).
CONCLUSIONS
IDC with a high prevalence of CD44(+)/CD24(-/low) tumor cells might correlate with aggressive features, such as ER and higher grades. Moreover, the proportion of CD44(+)/CD24(-/low) tumor cells in the DCIS components of IDC and DCIS might harbor different biology, which may lead to differences in cancer progression and early carcinogenesis.

Citations

Citations to this article as recorded by

Clinicopathologic Characteristics of Breast Cancer Stem Cells Identified on the Basis of Aldehyde Dehydrogenase 1 Expression
Yoon Seok Kim, Min Jung Jung, Dong Won Ryu, Chung Han Lee
Journal of Breast Cancer.2014; 17(2): 121. CrossRef
CD44/CD24 as potential prognostic markers in node-positive invasive ductal breast cancer patients treated with adjuvant chemotherapy
Agnieszka Adamczyk, Joanna A. Niemiec, Aleksandra Ambicka, Anna Mucha-Małecka, Jerzy Mituś, Janusz Ryś
Journal of Molecular Histology.2014; 45(1): 35. CrossRef

Expression of Raf-1 Kinase Inhibitory Protein in Extrahepatic Bile Duct Carcinoma.: Hyun Soo Kim, Gou Young Kim, Sung Jig Lim, Youn Wha Kim; Korean J Pathol. 2010;44(3):234-242.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.3.234

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Abstract PDF

BACKGROUND
Raf-1 kinase inhibitory protein (RKIP) recently has been identified as a metastasis suppressor in a variety of human carcinomas. The prognostic significance of RKIP expression in extrahepatic bile duct (EBD) carcinoma has not been studied. The aims of the current study were to evaluate RKIP expression and to determine the prognostic significance of RKIP expression in EBD carcinoma.
METHODS
Immunohistochemical staining for RKIP was performed for 131 cases of EBD carcinoma. The associations of RKIP expression with clinicopathologic parameters and patient outcomes were examined. Multivariate logistic regression analysis was used to identify independent predictive parameters for lymphovascular invasion and nodal and distant metastases.
RESULTS
Loss of RKIP expression was observed in 55.0% (72/131) of cases. EBD carcinoma had significantly lower RKIP immunoreactivity than normal EBD (p < 0.001). Loss of RKIP expression was significantly associated with lymphatic invasion (p = 0.030) and nodal metastasis (p = 0.036), but it was not found to be a significant prognostic predictor for overall, disease-free or distant metastasis-free survival. In addition, loss of RKIP expression was an independent predictor for lymphatic invasion (p = 0.027).
CONCLUSIONS
These results suggest that RKIP may play a role in the suppression of lymphatic invasion and nodal metastasis in EBD carcinoma.

Citations

Citations to this article as recorded by

Down-regulation of osteoprotegerin expression as a novel biomarker for colorectal carcinoma
Hyun-Soo Kim, Gun Yoon, Sung-Im Do, Sung-Joo Kim, Youn-Wha Kim
Oncotarget.2016; 7(12): 15187. CrossRef
Expression of phosphorylated extracellular signal-regulated kinase at the invasive front of hepatic colorectal metastasis
HYUN-SOO KIM, SUNG-IM DO, BYEONG-JOO NOH, YOUNG IN JEONG, SUN JIN PARK, YOUN WHA KIM
Oncology Letters.2015; 9(3): 1261. CrossRef
Reduced expression of Raf-1 kinase inhibitory protein predicts regional lymph node metastasis and shorter survival in esophageal squamous cell carcinoma
Hyun-Soo Kim, Kyu Yeoun Won, Gou Young Kim, Soo Cheol Kim, Yong-Koo Park, Youn Wha Kim
Pathology - Research and Practice.2012; 208(5): 292. CrossRef
Expression of Raf-1 kinase inhibitory protein in carcinoma of the ampulla of Vater
Hyun-Soo Kim, Sun Ho Lee, Kyu Yeoun Won, Gou Young Kim, Yong-Koo Park, Youn Wha Kim
Virchows Archiv.2012; 460(1): 61. CrossRef
Raf-1 Kinase Inhibitory Protein Expression in Thyroid Carcinomas
Hyun-Soo Kim, Gou Young Kim, Sung-Jig Lim, Youn Wha Kim
Endocrine Pathology.2010; 21(4): 253. CrossRef
Loss of Raf-1 kinase inhibitory protein in pancreatic ductal adenocarcinoma
Hyun-Soo Kim, Gou Young Kim, Sung-Jig Lim, Youn Wha Kim
Pathology.2010; 42(7): 655. CrossRef

Expression of Cyclooxygenase-2 and Embryonic Lethal Abnormal Vision-Like Protein HuR in Gallbladder Carcinoma.: Sung Im Do, Gou Young Kim, Sung Jig Lim, Youn Wha Kim; Korean J Pathol. 2010;44(1):42-47.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.1.42

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Abstract PDF

BACKGROUND
Cyclooxygenase-2 (COX-2) is an enzyme that promotes proliferation of tumor cells. HuR is a member of the family of embryonic lethal abnormal vision-like proteins. Recent studies show that cytoplasmic HuR stabilizes the mRNA of COX-2 and regulates the expression of COX-2. Moreover, cytoplasmic HuR expression is associated with a poorer prognosis for patients with some cancers. The aim of this study was to investigate the expression patterns of and the relationship between COX-2 and HuR in gallbladder carcinoma.
METHODS
We analyzed COX-2 and HuR expression by immunohistochemical staining of 108 gallbladder carcinomas.
RESULTS
COX-2 expression and nuclear and cytoplasmic HuR expression were seen in, respectively, 61 (56.5%), 77 (71.3%), and 4 (3.7%) cases. COX-2 and nuclear HuR were simultaneously expressed in 44 of the 108 samples without any quantitative association between the levels of each. COX-2 expression correlated with tumor stage, differentiation (based on histology), lymph node metastasis, perineural invasion, and survival. Nuclear and cytological expression of HuR did not correlate with any clinical parameters.
CONCLUSIONS
COX-2 expression but not HuR may play an important role in the prognosis of patients with gallbladder carcinoma.

Citations

Citations to this article as recorded by

Prognostic molecular markers in resected extrahepatic biliary tract cancers; a systematic review and meta-analysis of immunohistochemically detected biomarkers
Robert P Jones, Nicholas TE Bird, Richard A Smith, Daniel H Palmer, Steven W Fenwick, Graeme J Poston, Hassan Z Malik
Biomarkers in Medicine.2015; 9(8): 763. CrossRef

Case Reports

Smooth Muscle Hyperplasia of the Epididymis: Report of A Case and Review of the Literature.: Hyun Soo Kim, Ji Youn Sung, Gou Young Kim, Sung Jig Lim, Hyun Cheol Kim, Hyung Lae Lee; Korean J Pathol. 2009;43(2):177-181.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.2.177

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Abstract PDF

A 66-year-old man underwent surgery to remove an incidentally discovered non-tender intrascrotal mass. Ultrasonography revealed an irregular-margined, heterogeneous mass-like lesion in the epididymal tail. The mass was relatively well circumscribed but unencapsulated, irregular and firm; it consisted of expansile, increased smooth muscle fascicles originating from the epididymal muscular coat. Its cellular growth pattern lacked the cohesive, well-circumscribed proliferation pattern typical of a leiomyoma. A diagnosis of smooth muscle hyperplasia of the epididymis was made. Although ultrasonography is the imaging modality of choice for evaluating suspected intrascrotal masses, there are times when it cannot reliably identify the character of the masses and distinguish malignant from benign lesions. Ill-defined, solid extratesticular masses, that are ultrasonographically ambiguous, should be excised and confirmed histopathologically and smooth muscle hyperplasia of the epididymis should be included in the differential diagnosis of solid extratesticular masses.

Citations

Citations to this article as recorded by

Smooth muscle hyperplasia of the testicular adnexa: a clinicopathologic study of 12 cases
Fatimah Alruwaii, David J. Grignon, Muhammad T. Idrees
Human Pathology.2020; 99: 27. CrossRef
Hiperplasia muscular paratesticular (epididimaria) pseudotumoral. Descripción de 2 casos
Inmaculada Ruiz Molina, Vicente Cívico Amat, Beatriz Santiago Agredano
Medicina Clínica.2019; 152(5): e25. CrossRef
Pseudotumoral paratesticular (epididymal) muscle hyperplasia. Two case reports
InmaculadaRuiz Ruiz Molina, Vicente Cívico Amat, Beatriz Santiago Agredano
Medicina Clínica (English Edition).2019; 152(5): e25. CrossRef
Smooth muscle hyperplasia of the epididymis
O Blach, AM Pollock, D Douglas
Journal of Surgical Case Reports.2011; 2011(10): 10. CrossRef

Inflammatory Myofibroblastic Tumor of the Mesentery: A case report.: Sung Jig Lim, Gou Young Kim, Jae Hoon Park, Youn Wha Kim, Yong Koo Park, Ju Hie Lee, Moon Ho Yang; Korean J Pathol. 1999;33(9):729-732.

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Abstract PDF: Inflammatory myofibroblastic tumor or inflammatory pseudotumor is characterized by spindle cell proliferation with inflammatory cell infiltration, predominantly plasma cells and lymphocytes. We have experienced a case of inflammatory myofibroblastic tumor of the mesentery in a 57-year-old male patient with intermittent abdominal pain. On computer tomography, a well demarcated mass was seen in the mesenteric side of the ascending colon. Right hemicolectomy was performed under the impression of the metastatic tumor of lymph nodes. Grossly, a rather well-circumscribed gray white mass was noted in the mesentery of the ascending colon. Microscopically, the lesion consisted of plump spindle cells and accompanying inflammatory cellular infiltrates. The spindle cells were positive for vimentin.

Pulmonary Lymphangioleiomyomatosis and Micronodular Pneumocyte Hyperplasia associated with Tuberous Sclerosis: A Case Report.: Gou Young Kim, Juhie Lee, Yong Koo Park, Youn Wha Kim, Jae Hoon Park, Moon Ho Yang; Korean J Pathol. 2002;36(1):51-54.

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Abstract PDF: Lymphangioleiomyomatosis (LAM) is characterized by a hamartomatous proliferation of smooth muscle cells in the lung, mediastium, and abdomen. In the lung, an abnormal proliferation of smooth muscle is seen along the airways, blood vessels, and lymphatics, resulting in honeycombing of the lung. It occurs in 0.1-1% of tuberous sclerosis (TSC) patients. Micronodular pneumocyte hyperplasia (MNPH) is a rare but distinctive pulmonary manifestation of TSC, and appears to be a hamartomatous proliferation of the type II pneumocytes. We report a case of pulmonary LAM and MNPH associated with TSC and bilateral renal angiomyolipoma in a 26-year-old woman. Immunohistochemically, the spindle cells of LAM were positive for HMB-45, but the type II pneumocytes of MNPH were negative.

Original Article

Immunoexpressions of Thyroid Transcription Factor-1 and bcl-2 in Congenital Cystic Adenomatoid Malformation.: Na Rae Kim, Dong Hoon Kim, Gou Young Kim, Dae Shick Kim, Joungho Han; Korean J Pathol. 2003;37(1):10-14.

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Abstract PDF: BACKGROUND
Congenital cystic adenomatoid malformation (CCAM) is a congenital abnormality of branching morphogenesis of the lung. Thyroid transcription factor-1 (TTF-1) is detected in human respiratory epithelial cells from 11 weeks of gestation, and at full term, TTF-1 expression is confined within type II epithelial cells and in some respiratory nonciliated bronchiolar epithelial cells. Immunoexpression of bcl-2 is intimately related to apoptosis during the development.
METHODS
To elucidate the nature of the lesion, TTF-1 expression was evaluated in twenty-four cases of CCAM (eight cases of type 1 and sixteen cases of type 2) along with immunostaining for bcl-2. For the control group, four cases of fetal lungs (19 week-, 21 week-, 27 week- and 40 week-gestational age) were also evaluated. In all cases of CCAM, TTF-1 was detected in the nuclei of epithelial cells lining the cysts.
RESULTS
TTF-1 was expressed in the majority of the bronchiolar-like epithelial cells of the cysts in CCAM types 1, and 2, where almost 100% of the lining cells of the cysts were TTF-1 positive with variable intensity, while negative TTF-1 expressions were found in the alveolar-like epithelium of the adjacent alveoli or distal nonciliated bronchi. For bcl-2 immunostaining, no lining epithelial cells of the cysts were stained except for the infiltrating lymphocytes. In the control group, strong immunoreactivities found in early fetal stages were absent in the full-term aged lung (40 gestational weeks).
CONCLUSION
These results support the hypothesis that CCAM types 1 and 2 reflect the abnormalities in lung morphogenesis and differentiation that are distinct from those for normally developed alveolar epithelium or adjacent bronchial epithelium, thus retaining the abnormal TTF-1 immunoreactions. Though restricted to CCAM types 1 and 2 in this study, CCAM might be related to TTF-1 rather than apoptosis in the morphogenesis of the developing lung.

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