Journal of Pathology and Translational Medicine

Original Articles

Contribution of cytologic examination to diagnosis of poorly differentiated thyroid carcinoma: Na Rae Kim, Jae Yeon Seok, Yoo Seung Chung, Joon Hyop Lee, Dong Hae Chung; J Pathol Transl Med. 2020;54(2):171-178. Published online February 5, 2020; DOI: https://doi.org/10.4132/jptm.2019.12.03

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Background
The cytologic diagnosis of poorly differentiated thyroid carcinoma (PDTC) is difficult because it lacks salient cytologic findings and shares cytologic features with more commonly encountered neoplasms. Due to diverse cytologic findings and paucicellularity of PDTC, standardization of cytologic diagnostic criteria is limited. The purpose of this study is to investigate and recognize diverse thyroid findings of fine needle aspiration (FNA) cytology and frozen smear cytology in diagnosis of this rare but aggressive carcinoma.
Methods
The present study included six cases of FNA cytology and frozen smears of histologically diagnosed PDTCs.
Results
PDTC showed cytologic overlap with well-differentiated thyroid carcinomas (WDTCs). Five of six cases showed dedifferentiation arising from well differentiated thyroid carcinomas. Only one de novo PDTC showed highly cellular smears composed of discohesive small cells, high nuclear/cytoplasmic (N/C) ratio, prominent micronucleoli, and irregular nuclei. Retrospectively reviewed, these findings are highly suspicious for PDTC. Cytologic findings of nuclear atypia, pleomorphism, and irregularity were frequently found, whereas scattered small cells were seen only in the de novo case.
Conclusions
Heterogeneous cytologic findings of PDTCs are shared with those of WDTCs and contribute to difficult preoperative cytologic diagnoses. Most PDTCs show dedifferentiation from WDTCs. Albeit rare, de novo PDTC should be considered with cytology showing discohesive small cells with high N/C ratio. This will enable precise diagnosis and prompt treatment of this aggressive malignancy

Citations

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Non-papillary thyroid carcinoma diagnoses in The Bethesda System for Reporting Thyroid Cytopathology categories V and VI: An institutional experience
Myunghee Kang, Na Rae Kim, Jae Yeon Seok
Annals of Diagnostic Pathology.2024; 71: 152263. CrossRef
Cytologic features of differentiated high‐grade thyroid carcinoma: A multi‐institutional study of 40 cases
Vanda F. Torous, Tikamporn Jitpasutham, Zubair Baloch, Richard L. Cantley, Darcy A. Kerr, Xiaoying Liu, Zahra Maleki, Ross Merkin, Vania Nosé, Liron Pantanowitz, Isabella Tondi Resta, Esther D. Rossi, William C. Faquin
Cancer Cytopathology.2024; 132(8): 525. CrossRef
An Unexpected Finding of Poorly Differentiated Thyroid Carcinoma in a Toxic Thyroid Nodule
Kimberly Yuang, Huda Al-Bahadili, Alan Chang
JCEM Case Reports.2023;[Epub] CrossRef
Revisiting the cytomorphological features of poorly differentiated thyroid carcinoma: a comparative analysis with indeterminate thyroid fine-needle aspiration samples
Yazeed Alwelaie, Ali Howaidi, Mohammed Tashkandi, Ahmad Almotairi, Hisham Saied, Moammar Muzzaffar, Doaa Alghamdi
Journal of the American Society of Cytopathology.2023; 12(5): 331. CrossRef
Characterization of the genomic alterations in poorly differentiated thyroid cancer
Yeeun Lee, SeongRyeol Moon, Jae Yeon Seok, Joon-Hyop Lee, Seungyoon Nam, Yoo Seung Chung
Scientific Reports.2023;[Epub] CrossRef

Comparison of papanicolaou smear and human papillomavirus (HPV) test as cervical screening tools: can we rely on HPV test alone as a screening method? An 11-year retrospective experience at a single institution: Myunghee Kang, Seung Yeon Ha, Hyun Yee Cho, Dong Hae Chung, Na Rae Kim, Jungsuk An, Sangho Lee, Jae Yeon Seok, Juhyeon Jeong; J Pathol Transl Med. 2020;54(1):112-118. Published online January 15, 2020; DOI: https://doi.org/10.4132/jptm.2019.11.29

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Abstract PDF

Background
The decrease in incidence of cervical dysplasia and carcinoma has not been as dramatic as expected with the development of improved research tools and test methods. The human papillomavirus (HPV) test alone has been suggested for screening in some countries. The National Cancer Screening Project in Korea has applied Papanicolaou smears (Pap smears) as the screening method for cervical dysplasia and carcinoma. We evaluated the value of Pap smear and HPV testing as diagnostic screening tools in a single institution.
Methods
Patients co-tested with HPV test and Pap smear simultaneously or within one month of each other were included in this study. Patients with only punch biopsy results were excluded because of sampling errors. A total of 999 cases were included, and the collected reports encompassed results of smear cytology, HPV subtypes, and histologic examinations.
Results
Sensitivity and specificity of detecting high-grade squamous intraepithelial lesion (HSIL) and squamous cell carcinoma (SCC) were higher for Pap smears than for HPV tests (sensitivity, 97.14%; specificity, 85.58% for Pap smears; sensitivity, 88.32%; specificity, 54.92% for HPV tests). HPV tests and Pap smears did not differ greatly in detection of low-grade squamous intraepithelial lesion (85.35% for HPV test, 80.31% for Pap smears). When atypical glandular cells were noted on Pap smears, the likelihood for histologic diagnosis of adenocarcinoma following Pap smear was higher than that of high-risk HPV test results (18.8 and 1.53, respectively).
Conclusions
Pap smears were more useful than HPV tests in the diagnosis of HSIL, SCC, and glandular lesions.

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Challenges in the diagmosis of cervical pathologies
D. Y. Chernov, O. A. Tikhonovskaya, S. V. Logvinov, I. A. Petrov, Y. S. Yuriev, A. A. Zhdankina, A. V. Gerasimov, I. V. Zingalyuk, G. A. Mikheenko
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Bernardo Vega-Crespo, Vivian Alejandra Neira, Ruth Maldonado - Rengel, Diana López, Dayanara Delgado-López, Gabriela Guerra Astudillo, Veronique Verhoeven
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Cervical Human Papillomavirus Testing
Carol N. Rizkalla, Eric C. Huang
Surgical Pathology Clinics.2024; 17(3): 431. CrossRef
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E Chen, Hua-Nong Ting, Joon Huang Chuah, Jun Zhao
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T. Stverakova, I. Baranova, P. Mikyskova, B. Gajdosova, H. Vosmikova, J. Laco, V. Palicka, H. Parova
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Attitudes towards prevention of cervical cancer and early diagnosis among female academicians
Nurhan Doğan, Gamze Fışkın
Journal of Obstetrics and Gynaecology Research.2022; 48(6): 1433. CrossRef
Role of Self-Sampling for Cervical Cancer Screening: Diagnostic Test Properties of Three Tests for the Diagnosis of HPV in Rural Communities of Cuenca, Ecuador
Bernardo Vega Crespo, Vivian Alejandra Neira, José Ortíz Segarra, Ruth Maldonado Rengel, Diana López, María Paz Orellana, Andrea Gómez, María José Vicuña, Jorge Mejía, Ina Benoy, Tesifón Parrón Carreño, Veronique Verhoeven
International Journal of Environmental Research and Public Health.2022; 19(8): 4619. CrossRef
Utility of Scoring System for Screening and Early Warning of Cervical Cancer Based on Big Data Analysis
Dan Hou, Binjie Yang, Yangdan Li, Ming Sun
Frontiers in Public Health.2022;[Epub] CrossRef
Evaluation of Urine and Vaginal Self-Sampling versus Clinician-Based Sampling for Cervical Cancer Screening: A Field Comparison of the Acceptability of Three Sampling Tests in a Rural Community of Cuenca, Ecuador
Bernardo Vega Crespo, Vivian Alejandra Neira, José Ortíz S, Ruth Maldonado-Rengel, Diana López, Andrea Gómez, María José Vicuña, Jorge Mejía, Ina Benoy, Tesifón Parrón Carreño, Veronique Verhoeven
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Diagnostic distribution and pitfalls of glandular abnormalities in cervical cytology: a 25-year single-center study
Jung-A Sung, Ilias P. Nikas, Haeryoung Kim, Han Suk Ryu, Cheol Lee
Journal of Pathology and Translational Medicine.2022; 56(6): 354. CrossRef
Primary screening of cervical cancer by Pap smear in women of reproductive age group
Ruchi Mishra, Dakshina Bisht, Manisha Gupta
Journal of Family Medicine and Primary Care.2022; 11(9): 5327. CrossRef
Comparison of Learning Transfer Using Simulation Problem-Based Learning and Demonstration: An Application of Papanicolaou Smear Nursing Education
Jeongim Lee, Hae Kyoung Son
International Journal of Environmental Research and Public Health.2021; 18(4): 1765. CrossRef
Investigating host-virus interaction mechanism and phylogenetic analysis of viral proteins involved in the pathogenesis
Ahmad Abu Turab Naqvi, Farah Anjum, Alaa Shafie, Sufian Badar, Abdelbaset Mohamed Elasbali, Dharmendra Kumar Yadav, Md. Imtaiyaz Hassan, Timir Tripathi
PLOS ONE.2021; 16(12): e0261497. CrossRef
Utility of Human Papillomavirus Testing for Cervical Cancer Screening in Korea
Mee-seon Kim, Eun Hee Lee, Moon-il Park, Jae Seok Lee, Kisu Kim, Mee Sook Roh, Hyoun Wook Lee
International Journal of Environmental Research and Public Health.2020; 17(5): 1726. CrossRef

A Multi-institutional Study of Prevalence and Clinicopathologic Features of Non-invasive Follicular Thyroid Neoplasm with Papillary-like Nuclear Features (NIFTP) in Korea: Ja Yeong Seo, Ji Hyun Park, Ju Yeon Pyo, Yoon Jin Cha, Chan Kwon Jung, Dong Eun Song, Jeong Ja Kwak, So Yeon Park, Hee Young Na, Jang-Hee Kim, Jae Yeon Seok, Hee Sung Kim, Soon Won Hong; J Pathol Transl Med. 2019;53(6):378-385. Published online October 21, 2019; DOI: https://doi.org/10.4132/jptm.2019.09.18

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Abstract PDF

Background
In the present multi-institutional study, the prevalence and clinicopathologic characteristics of non-invasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) were evaluated among Korean patients who underwent thyroidectomy for papillary thyroid carcinoma (PTC).
Methods
Data from 18,819 patients with PTC from eight university hospitals between January 2012 and February 2018 were retrospectively evaluated. Pathology reports of all PTCs and slides of potential NIFTP cases were reviewed. The strict criterion of no papillae was applied for the diagnosis of NIFTP. Due to assumptions regarding misclassification of NIFTP as non-PTC tumors, the lower boundary of NIFTP prevalence among PTCs was estimated. Mutational analysis for BRAF and three RAS isoforms was performed in 27 randomly selected NIFTP cases.
Results
The prevalence of NIFTP was 1.3% (238/18,819) of all PTCs when the same histologic criteria were applied for NIFTP regardless of the tumor size but decreased to 0.8% (152/18,819) when tumors ≥1 cm in size were included. The mean follow-up was 37.7 months and no patient with NIFTP had evidence of lymph node metastasis, distant metastasis, or disease recurrence during the follow-up period. A difference in prevalence of NIFTP before and after NIFTP introduction was not observed. BRAF^V600E mutation was not found in NIFTP. The mutation rate for the three RAS genes was 55.6% (15/27).
Conclusions
The low prevalence and indolent clinical outcome of NIFTP in Korea was confirmed using the largest number of cases to date. The introduction of NIFTP may have a small overall impact in Korean practice.

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Case report & review: Bilateral NIFTP harboring concomitant HRAS and KRAS mutation: Report of an unusual case and literature review
Marianna Rita Brogna, Francesca Collina, Maria Grazia Chiofalo, Debora De Bartolo, Angela Montone, Maria Rosaria Schiano, Michele Del Sesto, Nubia Pizza, Gerardo Ferrara
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Analysis of a pre-2017 follicular variant papillary thyroid carcinoma cohort reclassified as noninvasive follicular thyroid neoplasm with papillary-like features (NIFTP): an 11-year retrospective single institution experience
Shaham Beg, Sana Irfan Khan, Isabella Cui, Theresa Scognamiglio, Rema Rao
Journal of the American Society of Cytopathology.2023; 12(2): 112. CrossRef
Noninvasive Follicular Thyroid Neoplasm With Papillary-Like Nuclear Features: What a Surgeon Should Know
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NTRK Fusion in a Cohort of BRAF p. V600E Wild-Type Papillary Thyroid Carcinomas
Seung Eun Lee, Mi-Sook Lee, Heejin Bang, Mi Young Kim, Yoon-La Choi, Young Lyun Oh
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A Comprehensive Study on the Diagnosis and Management of Noninvasive Follicular Thyroid Neoplasm with Papillary-Like Nuclear Features
Bayan A. Alzumaili, Lauren N. Krumeich, Reagan Collins, Timothy Kravchenko, Emad I. Ababneh, Adam S. Fisch, William C. Faquin, Vania Nosé, Maria Martinez-Lage, Gregory W. Randolph, Rajshri M. Gartland, Carrie C. Lubitz, Peter M. Sadow
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Clinical-Pathological and Molecular Evaluation of 451 NIFTP Patients from a Single Referral Center
Paola Vignali, Agnese Proietti, Elisabetta Macerola, Anello Marcello Poma, Liborio Torregrossa, Clara Ugolini, Alessio Basolo, Antonio Matrone, Teresa Rago, Ferruccio Santini, Rossella Elisei, Gabriele Materazzi, Fulvio Basolo
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Clinicopathological parameters for predicting non-invasive follicular thyroid neoplasm with papillary features (NIFTP)
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The Incidence of Noninvasive Follicular Thyroid Neoplasm with Papillary-Like Nuclear Features: A Meta-Analysis Assessing Worldwide Impact of the Reclassification
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Case Study

Primary Necrobiotic Xanthogranulomatous Sialadenitis with Submandibular Gland Localization without Skin Involvement: Myunghee Kang, Na Rae Kim, Dong Hae Chung, Jae Yeon Seok, Dong Young Kim; J Pathol Transl Med. 2019;53(4):261-265. Published online January 16, 2019; DOI: https://doi.org/10.4132/jptm.2019.01.08

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Abstract PDF

Necrobiotic xanthogranulomatous reaction is a multiorgan, non-Langerhans cell histiocytosis with an unknown etiology. Occurrence in the salivary gland is extremely rare. We recently identified a case of necrobiotic xanthogranulomatous sialadenitis in a 73-year-old Korean woman who presented with a painless palpable lesion in the chin. There was no accompanying cutaneous lesion. Partial resection and subsequent wide excision with neck dissection were performed. Pathological examination showed a severe inflammatory lesion that included foamy macrophages centrally admixed with neutrophils, eosinophils, lymphocytes, plasma cells, and scattered giant cells, as well as necrobiosis. During the 12-month postoperative period, no grossly remarkable change in size was noted. Necrobiotic xanthogranulomatous inflammation may be preceded by or combined with hematologic malignancy. Although rare, clinicians and radiologists should be aware that an adhesive necrobiotic xanthogranuloma in the salivary gland may present with a mass-like lesion. Further evaluation for hematologic disease and close follow-up are needed when a pathologic diagnosis is made.

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Five Cases of Xanthogranulomatous Sialadenitis
Satoshi Kiyama, Hiroyuki Iuchi, Kotoko Ito, Kengo Nishimoto, Tsutomu Matsuzaki, Masaru Yamashita
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Xanthogranulomatous Sialadenitis, an Uncommon Reactive Change is Often Associated with Warthin’s Tumor
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Original Article

Intraoperative Frozen Cytology of Central Nervous System Neoplasms: An Ancillary Tool for Frozen Diagnosis: Myunghee Kang, Dong Hae Chung, Na Rae Kim, Hyun Yee Cho, Seung Yeon Ha, Sangho Lee, Jungsuk An, Jae Yeon Seok, Gie-Taek Yie, Chan Jong Yoo, Sang Gu Lee, Eun Young Kim, Woo Kyung Kim, Seong Son, Sun Jin Sym, Dong Bok Shin, Hee Young Hwang, Eung Yeop Kim, Kyu Chan Lee; J Pathol Transl Med. 2019;53(2):104-111. Published online January 14, 2019; DOI: https://doi.org/10.4132/jptm.2018.11.10

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Abstract PDF

Background
Pathologic diagnosis of central nervous system (CNS) neoplasms is made by comparing light microscopic, immunohistochemical, and molecular cytogenetic findings with clinicoradiologic observations. Intraoperative frozen cytology smears can improve the diagnostic accuracy for CNS neoplasms. Here, we evaluate the diagnostic value of cytology in frozen diagnoses of CNS neoplasms.
Methods
Cases were selected from patients undergoing both frozen cytology and frozen sections. Diagnostic accuracy was evaluated.
Results
Four hundred and fifty-four cases were included in this retrospective single-center review study covering a span of 10 years. Five discrepant cases (1.1%) were found after excluding 53 deferred cases (31 cases of tentative diagnosis, 22 cases of inadequate frozen sampling). A total of 346 cases of complete concordance and 50 cases of partial concordance were classified as not discordant cases in the present study. Diagnostic accuracy of intraoperative frozen diagnosis was 87.2%, and the accuracy was 98.8% after excluding deferred cases. Discrepancies between frozen and permanent diagnoses (n = 5, 1.1%) were found in cases of nonrepresentative sampling (n = 2) and misinterpretation (n = 3). High concordance was observed more frequently in meningeal tumors (97/98, 99%), metastatic brain tumors (51/52, 98.1%), pituitary adenomas (86/89, 96.6%), schwannomas (45/47, 95.8%), high-grade astrocytic tumors (47/58, 81%), low grade astrocytic tumors (10/13, 76.9%), non-neoplastic lesions (23/36, 63.9%), in decreasing frequency.
Conclusions
Using intraoperative cytology and frozen sections of CNS tumors is a highly accurate diagnostic ancillary method, providing subtyping of CNS neoplasms, especially in frequently encountered entities.

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Hirotaka Fujita, Takuma Tajiri, Tomohisa Machida, Nozomi Nomura, Suguru Toguchi, Hitoshi Itoh, Shinichiro Hiraiwa, Tomoko Sugiyama, Masaaki Imai, Shinri Oda, Masami Shimoda, Naoya Nakamura
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Intraoperative frozen cytology of intraosseous cystic meningioma in the sphenoid bone
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Review

Thyroid Fine-Needle Aspiration Cytology Practice in Korea: Yoon Jin Cha, Ju Yeon Pyo, SoonWon Hong, Jae Yeon Seok, Kyung-Ju Kim, Jee-Young Han, Jeong Mo Bae, Hyeong Ju Kwon, Yeejeong Kim, Kyueng-Whan Min, Soonae Oak, Sunhee Chang; J Pathol Transl Med. 2017;51(6):521-527. Published online October 11, 2017; DOI: https://doi.org/10.4132/jptm.2017.09.26

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Abstract PDF

We reviewed the current status of thyroid fine-needle aspiration cytology (FNAC) in Korea. Thyroid aspiration biopsy was first introduced in Korea in 1977. Currently, radiologists aspirate the thyroid nodule under the guidance of ultrasonography, and cytologic interpretation is only legally approved when a cytopathologist makes the diagnosis. In 2008, eight thyroid-related societies came together to form the Korean Thyroid Association. The Korean Society for Cytopathology and the endocrine pathology study group of the Korean Society for Pathologists have been updating the cytologic diagnostic guidelines. The Bethesda System for Reporting Thyroid Cytopathology was first introduced in 2009, and has been used by up to 94% of institutions by 2016. The average diagnosis rates are as follows for each category: I (12.4%), II (57.9%), III (10.4%), IV (2.9%), V (3.7%), and VI (12.7%). The malignancy rates in surgical cases are as follows for each category: I (28.7%), II (27.8%), III (50.6%), IV (52.3%), V (90.7%), and VI (100.0%). Liquid-based cytology has been used since 2010, and it was utilized by 68% of institutions in 2016. The categorization of thyroid lesions into “atypia of undetermined significance” or “follicular lesion of undetermined significance” is necessary to draw consensus in our society. Immunocytochemistry for galectin-3 and BRAF is used. Additionally, a molecular test for BRAF in thyroid FNACs is actively used. Core biopsies were performed in only 44% of institutions. Even the institutions that perform core biopsies only perform them for less than 3% of all FNACs. However, only 5% of institutions performed core biopsies up to three times more than FNAC.

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State of the art of thyroid pathology: FNA diagnostic accuracy in an intermediate center in Ibagué
Daniel Javier Velez Bohorquez, Nohora Bibiana Varon Arce, Sandra Milena Tellez Olaya, Sebastian Camilo Mora Garcia, Anggi Margarita Velez Bohorquez, Mabel Elena Bohorquez Lozano
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BRAFV600E Mutation is a Strong Preoperative Indicator for Predicting Malignancy in Thyroid Nodule Patients with Atypia of Undetermined Significance Identified by Fine Needle Aspiration
Hye Rang Choi, Bo-Yoon Choi, Jae Hoon Cho, Young Chang Lim
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The Usefulness of Immunocytochemistry of CD56 in Determining Malignancy from Indeterminate Thyroid Fine-Needle Aspiration Cytology
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Thyroid FNA cytology in Asian practice—Active surveillance for indeterminate thyroid nodules reduces overtreatment of thyroid carcinomas
K. Kakudo, M. Higuchi, M. Hirokawa, S. Satoh, C. K. Jung, A. Bychkov
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The Use of Fine-Needle Aspiration (FNA) Cytology in Patients with Thyroid Nodules in Asia: A Brief Overview of Studies from the Working Group of Asian Thyroid FNA Cytology
Chan Kwon Jung, SoonWon Hong, Andrey Bychkov, Kennichi Kakudo
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Original Article

Morphologic Analysis of Cytomegalovirus Infected Cells in Bronchial Washing Cytology: Comparison of Liquid-Based Preparation and Conventional Smear: Jae Yeon Seok, Jungsuk An, Seung Yeon Ha, Dong Hae Chung, Sangho Lee, Hyunchul Kim; J Pathol Transl Med. 2016;50(2):147-154. Published online February 15, 2016; DOI: https://doi.org/10.4132/jptm.2015.12.25

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Background
The cytopathic effects of cytomegalovirus (CMV) infection have been well described since the virus was first reported; however, the morphology of CMV infection has not been clearly studied. We examined the difference in detailed cytologic findings in bronchial washing cytology between liquid-based and conventionally prepared smears. Methods: Bronchial washing cytology was processed using either the conventional preparation (CP) or liquid-based preparation (LBP). Sixty-nine cells with typical cytopathic effects of CMV infection were detected on CP slides and 18 cells on LBP slides. Using the image analyzer, area, circumference, major axis, and minor axis of the cytoplasm, nucleus, and intranuclear inclusion were measured in singly scattered CMV-infected cells, and histiocytes were used as a control. Results: The mean cytoplasmic area of CMV-infected cells was 1.47 times larger than that of histiocytes in CP and 2.92 times larger in LBP (p<.05). The mean nuclear area of CMV-infected cells was 2.61 times larger than that of histiocytes in CP and 4.25 times larger in LBP (p<.05). The nucleus to cytoplasm ratio and intranuclear inclusion to cytoplasm ratio of the mean area, circumference, major axis, and minor axis in CP were larger than those in LBP (p<.05). Conclusions: The sizes of cytoplasm, nucleus, and intranuclear inclusion were larger in LBP than in CP, indicating that CMV-infected cells are easily detectable in LBP. However, the nucleus-to-cytoplasm ratio was larger in CP, suggesting that differentiation from malignancy or regenerative atypia requires caution in CP.

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Case Study

Rare Case of Anal Canal Signet Ring Cell Carcinoma Associated with Perianal and Vulvar Pagetoid Spread: Na Rae Kim, Hyun Yee Cho, Jeong-Heum Baek, Juhyeon Jeong, Seung Yeon Ha, Jae Yeon Seok, Sung Won Park, Sun Jin Sym, Kyu Chan Lee, Dong Hae Chung; J Pathol Transl Med. 2016;50(3):231-237. Published online October 8, 2015; DOI: https://doi.org/10.4132/jptm.2015.08.08

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A 61-year-old woman was referred to surgery for incidentally found colonic polyps during a health examination. Physical examination revealed widespread eczematous skin lesion without pruritus in the perianal and vulvar area. Abdominopelvic computed tomography showed an approximately 4-cm-sized, soft tissue lesion in the right perianal area. Inguinal lymph node dissection and Mils’ operation extended to perianal and perivulvar skin was performed. Histologically, the anal canal lesion was composed of mucin-containing signet ring cells, which were similar to those found in Pagetoid skin lesions. It was diagnosed as an anal canal signet ring cell carcinoma (SRCC) with perianal and vulvar Pagetoid spread and bilateral inguinal lymph node metastasis. Anal canal SRCC is rare, and the current case is the third reported case in the English literature. Seven additional cases were retrieved from the world literature. Here, we describe this rare case of anal canal SRCC with perianal Pagetoid spread and provide a literature review.

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Alveolar Rhabdomyosarcoma of the Lip in an Adult with Clear Cell Features: Jae Yeon Seok, Juhyeon Jeong, Young Woo Cheon, Hyun Yee Cho, Seung Yeon Ha, Dong Hae Chung; J Pathol Transl Med. 2015;49(1):81-84. Published online January 15, 2015; DOI: https://doi.org/10.4132/jptm.2014.06.03

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Papillary Cystadenoma of the Fallopian Tube Not Associated with von Hippel-Lindau Disease: A Case Report: Jae Yeon Seok, Myunghee Kang, Jungsuk An, Hyunchul Kim, Kwang-Beom Lee, Hyun Yee Cho; Korean J Pathol. 2014;48(5):382-386. Published online October 27, 2014; DOI: https://doi.org/10.4132/KoreanJPathol.2014.48.5.382

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Bilateral Stafne Bone Cavity in the Anterior Mandible with Heterotopic Salivary Gland Tissue: A Case Report: Hyunchul Kim, Jae Yeon Seok, Sangho Lee, Jungsuk An, Na Rae Kim, Dong Hae Chung, Hyun Yee Cho, Seung Yeon Ha; Korean J Pathol. 2014;48(3):248-249. Published online June 26, 2014; DOI: https://doi.org/10.4132/KoreanJPathol.2014.48.3.248

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Mahdi Niknami, Azin Parsa, Zahra Khodadadi
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Stafne’s bone cyst revisited and renamed: the benign mandibular concavity
Johan K.M. Aps, Natasha Koelmeyer, Cina Yaqub
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Liu Liu, Byung Cheol Kang, Suk Ja Yoon, Jae Seo Lee, Sel Ae Hwang
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Crush Cytology of Microcystic Meningioma with Extensive Sclerosis: Jae Yeon Seok, Na Rae Kim, Hyun Yee Cho, Dong Hae Chung, Gi-Taek Yee, Eung Yeop Kim; Korean J Pathol. 2014;48(1):77-80. Published online February 25, 2014; DOI: https://doi.org/10.4132/KoreanJPathol.2014.48.1.77

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Case Study

Human Cutaneous Protothecosis: Report of a Case and Literature Review: Jae Yeon Seok, Yoonho Lee, Hyukmin Lee, Sang Yeop Yi, Hwa Eun Oh, Ji-Sun Song; Korean J Pathol. 2013;47(6):575-578. Published online December 24, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.6.575

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Abstract PDF

The Prototheca species is achlorophyllic algae and rarely causes human infection. Human protothecosis presents clinically as a cutaneous infection, olecranon bursitis, and disseminated systemic disease. We report a case of human cutaneous protothecosis involving the left wrist. A 68-year-old man presented with an ill-defined erythematous lesion with crust at the dorsal aspect of his left wrist. A punch biopsy was performed to reveal the histologic features of granulomatous inflammation with necrosis at the upper dermis, containing Prototheca organisms, of which, the characteristic features were highlighted by special staining. Through a molecular study, the Prototheca zopfii species was identified.

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Case Reports

Fine Needle Aspiration Cytology of Chronic Sclerosing Sialadenitis with Mucinous Metaplasia in Parotid Gland: A Case Report.: Jae Yeon Seok, Woo Hee Jung, Xu Xiang Fan, Jin Kim, Soon Won Hong; Korean J Cytopathol. 2005;16(2):102-105.

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Abstract PDF: Chronic sclerosing sialadenitis, also known as Kuttner tumor, is a benign chronic inflammatory lesion of the salivary gland. Here, we describe a case of chronic sclerosing sialadenitis with mucinous ductal metaplasia in a parotid gland, which was confused with low-grade mucoepidermoid carcinoma on aspiration cytology.

Multiple Glomus Tumors of the Ankle with Prominent Intranuclear Pseudoinclusions.: Jae Yeon Seok, Se Hoon Kim, Tae jung Kwon, Jieun Kwon, Yoon Hee Lee, Kyoo Ho Shin, Woo Ick Yang; Korean J Pathol. 2007;41(5):337-342.

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Abstract PDF: Glomus tumors are neoplasms that are composed of modified smooth muscle cells of the glomus body. Here, we report a case of multiple glomus tumors of the ankle that showed various histologic types, including the solid type (glomus tumor proper) and angiomatous type (glomangioma). The tumor cells observed in this case also showed prominent intranuclear inclusions, which has not yet been reported in glomus tumors. Ultrastructural examination demonstrated that the nuclear inclusions were not true inclusion bodies but were intranuclear cytoplasmic pseudoinclusions formed by cytoplasmic invaginations that formed as a result of the deep and complex nuclear contours.

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