Journal of Pathology and Translational Medicine

Case Studies

Intraoperative frozen cytology of intraosseous cystic meningioma in the sphenoid bone: Na Rae Kim, Gie-Taek Yie; J Pathol Transl Med. 2020;54(6):508-512. Published online July 1, 2020; DOI: https://doi.org/10.4132/jptm.2020.05.21

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Meningiomas in bone are rarely subjected to fine-needle aspiration diagnosis, and those arising in the skull bone with a cystic presentation are rare. A 24-year-old woman presented with subdural hemorrhage, and subsequent radiology depicted an osteolytic mass-like lesion in the sphenoid bone. Intraoperatively, a solid and cystic hemorrhagic lesion mimicking an aneurysmal bone cyst was observed in the sphenoid bone with dural tearing. Frozen cytology showed singly scattered or epithelioid clusters of round to elongated cells intermixed with many neutrophils. Tumor cells had bland-looking round nuclei with rare prominent nucleoli and nuclear inclusions and eosinophilic granular to globoid cytoplasm in capillary-rich fragments. Histology revealed intraosseous meningothelial and microcystic meningioma (World Health Organization grade 1) in right lesser wing of the sphenoid bone. Considering its unusual location and cytologic findings, differential diagnoses included chordoma, chondroma, chondrosarcoma, and aneurysmal bone cyst. The present case posed a diagnostic challenge due to possible confusion with these entities.

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Middle ear adenoma: Cytohistologic features and differential diagnosis
Abdullah Almajnooni, Matthew Vega, Lin Cheng, Paolo Gattuso, Mary K. Allen‐Proctor
Diagnostic Cytopathology.2023;[Epub] CrossRef
Exploring the role of epidermal growth factor receptor variant III in meningeal tumors
Rashmi Rana, Vaishnavi Rathi, Kirti Chauhan, Kriti Jain, Satnam Singh Chhabra, Rajesh Acharya, Samir Kumar Kalra, Anshul Gupta, Sunila Jain, Nirmal Kumar Ganguly, Dharmendra Kumar Yadav, Timir Tripathi
PLOS ONE.2021; 16(9): e0255133. CrossRef

Pediatric granular cell tumor in the posterior wall of the larynx extending to the trachea: Jungsuk Ahn, Na Rae Kim, Yong Han Sun; J Pathol Transl Med. 2020;54(4):336-339. Published online April 15, 2020; DOI: https://doi.org/10.4132/jptm.2020.02.28

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Abstract PDF

Granular cell tumor (GCT) is a slow-growing benign neoplasm that can be found in any organ. Pediatric laryngotracheal GCT is rare. We experienced a 6-year-old boy suffering from a barking cough and symptoms of stridor and croup for one month. Head and neck computed tomography revealed a protruding mass that occluded 60% of the airway lumen. Under the impression of hemangioma or papilloma, excision revealed a submucosal non-encapsulated mass. Histologically, the mass was composed of sheets of large polyhedralshaped tumor cells containing plump eosinophilic granular cytoplasm and centrally placed, small, bland-appearing nuclei. The tumor cells were positive for S-100 protein, and voluminous eosinophilic cytoplasm was stained by diastase-resistant periodic acid-Schiff. The present report describes a unique case of a huge pediatric laryngeal GCT extending to the subglottic trachea. We also review the clinical course of pediatric laryngotracheal GCT and emphasize the importance of diagnosing GCT in children.

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Pediatric granular cell tumor of the larynx: A case report and literature review
Jing Ke, Junwei Xiong, Juhong Zhang, Haiyu Ma, Wei Yuan
Journal of Cancer Research and Therapeutics.2023; 19(4): 1070. CrossRef

Original Articles

Adjunctive markers for classification and diagnosis of central nervous system tumors: results of a multi-center neuropathological survey in Korea: Yoon Jin Cha, Se Hoon Kim, Na Rae Kim; J Pathol Transl Med. 2020;54(2):165-170. Published online February 20, 2020; DOI: https://doi.org/10.4132/jptm.2020.02.04

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Abstract PDF Supplementary Material

Background
The revised 4th 2016 World Health Organization (WHO) classification of tumors of the central nervous system (CNS) classification has adopted integrated diagnosis encompassing the histology and molecular features of CNS tumors. We aimed to investigate the immunohistochemistry, molecular testing, and testing methods for diagnosis of CNS tumors in pathological labs of tertiary centers in Korea, and evaluate the adequacy of tests for proper diagnosis in daily practice.
Methods
A survey, composed of eight questions concerning molecular testing for diagnosis of CNS tumors, was sent to 10 neuropathologists working in tertiary centers in Korea.
Results
For diagnosis of astrocytic and oligodendroglial tumors, all 10 centers performed isocitrate dehydrogenase mutations testing and 1p/19q loss of heterozygosity. For glioneuronal tumors, immunohistochemistry (IHC) assays for synaptophysin (n = 9), CD34 (n = 7), BRAF(VE1) (n = 5) were used. For embryonal tumors, particularly in medulloblastoma, four respondents used IHC panel (growth factor receptor bound protein 2-associated protein 1, filamin A, and yes-associated protein 1) for molecular subclassification. Regarding meningioma, all respondents performed Ki-67 IHC and five performed telomerase reverse transcriptase promoter mutation.
Conclusions
Most tertiary centers made proper diagnosis in line with 2016 WHO classification. As classification of CNS tumors has evolved to be more complex and more ancillary tests are required, these should be performed considering the effect of necessity and justification.

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Exploring the role of epidermal growth factor receptor variant III in meningeal tumors
Rashmi Rana, Vaishnavi Rathi, Kirti Chauhan, Kriti Jain, Satnam Singh Chhabra, Rajesh Acharya, Samir Kumar Kalra, Anshul Gupta, Sunila Jain, Nirmal Kumar Ganguly, Dharmendra Kumar Yadav, Timir Tripathi
PLOS ONE.2021; 16(9): e0255133. CrossRef

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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Abstract PDF

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

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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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Case Studies

Primary carcinoid tumor in the external auditory canal: Dong Hae Chung, Gyu Cheol Han, Na Rae Kim; J Pathol Transl Med. 2020;54(2):184-187. Published online November 13, 2019; DOI: https://doi.org/10.4132/jptm.2019.11.07

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Abstract PDF

A 39-year-old man visited the department of otolaryngology due to an ongoing hearing disturbance that had lasted for 1 year. Temporal bone computed tomography revealed soft tissue density nearly obliterating the left external auditory canal (EAC). The mass was composed of sheets of round tumor cells containing moderate amounts of fine granular cytoplasm and salt and pepper chromatin. Neither mitosis nor necrosis was found. The Ki-67 proliferation index was less than 2%. Cells were positive for CD56 and synaptophysin but negative for chromogranin, cytokeratin (CK) 20, and CK7. Based on these findings, the tumor was diagnosed as a carcinoid tumor, well differentiated neuroendocrine carcinoma, grade 1 (G1) according to current World Health Organization (WHO) classification of head and neck tumors; and a neuroendocrine tumor, G1 according to neuroendocrine neoplasm (NEN)-2018 WHO standard classification. He remained free of local recurrence and metastasis after 20 months of follow up. To date, only six cases of primary NENs in the EAC have been reported. Metastatic tumor should be included in the differential diagnoses. Because of its rarity, the prognosis and treatment have not yet been clarified.

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Incidental finding of a neuroendocrine neoplasm in a suspected ear canal exostosis
Alexander Wieck Fjaeldstad, Gerda Elisabeth Villadsen, Gitte Dam, Stephen Jacques Hamilton-Dutoit, Thomas Winther Frederiksen
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Clinical Nuclear Medicine.2022; 47(8): e552. CrossRef

Frozen Cytology of Meningeal Malignant Solitary Fibrous Tumor/Hemangiopericytoma: Myunghee Kang, Na Rae Kim, Dong Hae Chung, Gie-Taek Yie; J Pathol Transl Med. 2019;53(3):192-197. Published online April 11, 2019; DOI: https://doi.org/10.4132/jptm.2019.03.20

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Abstract PDF

A 51-year-old woman presented with severe dizziness. The brain magnetic resonance image revealed a 5.5 cm multiloculated mass with a thick rim in the left temporal lobe. Cytological examination of frozen diagnosis of the mass showed hypercellular sheets of round and rhabdoid cells in a hemorrhagic background, and two mitotic figures were observed. Histologically, the excised dura-based mass consisted of predominantly round cells with small foci of rhabdoid tumor cells in a pseudoalveolar pattern in a hemorrhagic background, and the cells showed nuclear positivity for signal transducer and activator of transcription 6 as well as frequent mitosis. The mass was diagnosed as a grade 3 solitary fibrous tumor (SFT)/hemangiopericytoma (HPC). The cytological diagnosis of SFT/HPC is challenging because of the heterogeneous cytological findings, such as histological heterogeneity, and because there are no standardized cytological criteria for malignant SFT/HPC. Cytological findings, such as singly scattered small cells, hypercellularity, rare ropy collagen, and round and rhabdoid cells with pseudoalveolar pattern, may assist in the diagnosis of malignant SFT/HPC.

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Cytologic features of mesenchymal, melanocytic and haematolymphoid tumours of the central nervous system and metastases
Carmen Bárcena, José A. Jiménez‐Heffernan
Cytopathology.2024; 35(5): 590. CrossRef
A Hemangiopericytoma in the External Auditory Canal: A Rare Clinical Presentation and Management
Vaibhavi Patil, Prasad Deshmukh, Sagar S Gaurkar , Ayushi Ghosh Moulic, Jasleen Kaur
Cureus.2024;[Epub] CrossRef
Scoring system for intraoperative diagnosis of intracranial schwannoma by squash cytology
Hirotaka Fujita, Takuma Tajiri, Tomohisa Machida, Nozomi Nomura, Suguru Toguchi, Hitoshi Itoh, Shinichiro Hiraiwa, Tomoko Sugiyama, Chie Inomoto, Masaaki Imai, Shinri Oda, Masami Shimoda, Naoya Nakamura
Cytopathology.2022; 33(2): 196. CrossRef
Occurrence of a solitary fibrous tumor adjacent to the resection bed of a high-grade meningioma: A case report
Coby Cunningham, Rocco Dabecco, Justin Davanzo
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A case of solitary fibrous tumor arising in the meninge
Saori NAKANISHI, Naoto KURODA, Toshiko TAKAI, Mari KOJIMA, Misato OONOGI
The Journal of the Japanese Society of Clinical Cytology.2021; 60(4): 224. CrossRef
Intraoperative frozen cytology of intraosseous cystic meningioma in the sphenoid bone
Na Rae Kim, Gie-Taek Yie
Journal of Pathology and Translational Medicine.2020; 54(6): 508. CrossRef

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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Satoshi Kiyama, Hiroyuki Iuchi, Kotoko Ito, Kengo Nishimoto, Tsutomu Matsuzaki, Masaru Yamashita
Practica Oto-Rhino-Laryngologica.2022; 115(4): 315. CrossRef
Xanthogranulomatous change in a pleomorphic adenoma: An extremely rare variant/degenerative change. Is it fine needle aspiration induced?
Mukta Pujani, Dipti Sidam, Kanika Singh, Aparna Khandelwal, Khushbu Katarya
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A Case of Xanthogranulomatous Sialadenitis with Facial Palsy Mimicking Malignancy
Sang Hyun Kim, Sun Woo Kim, Sang Hyuk Lee
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Xanthogranulomatous Sialadenitis, an Uncommon Reactive Change is Often Associated with Warthin’s Tumor
Lihong Bu, Hui Zhu, Emilian Racila, Sobia Khaja, David Hamlar, Faqian Li
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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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Intraoperative Integrated Diagnostic System for Malignant Central Nervous System Tumors
Takahiro Hayashi, Kensuke Tateishi, Shinichiro Matsuyama, Hiromichi Iwashita, Yohei Miyake, Akito Oshima, Hirokuni Honma, Jo Sasame, Katsuhiro Takabayashi, Kyoka Sugino, Emi Hirata, Naoko Udaka, Yuko Matsushita, Ikuma Kato, Hiroaki Hayashi, Taishi Nakamur
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B N Kumarguru, G Santhipriya, S Kranthi Kumar, R Ramesh Kumar, A S Ramaswamy, P Janakiraman
Journal of Cytology.2022; 39(1): 1. CrossRef
Intraoperative squash cytology provides a qualitative intraoperative diagnosis for cases in which frozen section yields a diagnosis of equivocal brain tumour
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
Na Rae Kim, Gie-Taek Yie
Journal of Pathology and Translational Medicine.2020; 54(6): 508. CrossRef
Use of 5-Aminolevulinic Acid for Confirmation of Lesional Biopsy Sample in Presumed High-Grade Glioma
Victoria L. Watson, Jeffrey W. Cozzens
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Case Study

Squamous Cell Carcinoma of the Extrahepatic Common Hepatic Duct: Myunghee Kang, Na Rae Kim, Dong Hae Chung, Hyun Yee Cho, Yeon Ho Park; J Pathol Transl Med. 2019;53(2):112-118. Published online October 1, 2018; DOI: https://doi.org/10.4132/jptm.2018.09.03

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Abstract PDF

We report a rare case of hilar squamous cell carcinoma. A 62-year-old Korean woman complaining of nausea was referred to our hospital. Her biliary computed tomography revealed a 28 mm-sized protruding solid mass in the proximal common bile duct. The patient underwent left hemihepatectomy with S1 segmentectomy and segmental excision of the common bile duct. Microscopically, the tumor was a moderately differentiated squamous cell carcinoma of the extrahepatic bile duct, without any component of adenocarcinoma or metaplastic portion in the biliary epithelium. Immunohistochemically, the tumor was positive for cytokeratin (CK) 5/6, CK19, p40, and p63. Squamous cell carcinoma of the extrahepatic bile duct is rare. To date, only 24 cases of biliary squamous cell carcinomas have been reported. Here, we provide a clinicopathologic review of previously reported extrahepatic bile duct squamous cell carcinomas.

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Milind Javle, Sunyoung Lee, Nilofer S Azad, Mitesh J Borad, Robin Kate Kelley, Smitha Sivaraman, Anna Teschemaker, Ishveen Chopra, Nora Janjan, Shreekant Parasuraman, Tanios S Bekaii-Saab
The Oncologist.2022; 27(10): 874. CrossRef
PRIMARY SQUAMOUS CELL CARCINOMA OF THE COMMON BILE DUCT WITH LIVER METASTASES
Dhouha BACHA, Mohamed HAJRI, Wael FERJAOUI, Ghofrane TALBI, Lasaad GHARBI, Mohamed Taher KHALFALLAH, Sana ben SLAMA, Ahlem LAHMAR
ABCD. Arquivos Brasileiros de Cirurgia Digestiva (São Paulo).2021;[Epub] CrossRef
S1510 A Rare Case of Squamous Cell Carcinoma of the Bile Duct
Stefanie Gallagher, Kyley Leroy, Julianna Tantum, Babak Etemad
American Journal of Gastroenterology.2021; 116(1): S688. CrossRef
Heparin

Reactions Weekly.2019; 1752(1): 184. CrossRef
Carcinoma primario de células escamosas del conducto hepático común: a propósito de un caso
Ana Delgado Maroto, Andrés Barrientos Delgado, Marta Lázaro Sáez, Samia Hallouch Toutouh, Enrique Práxedes González
Gastroenterología y Hepatología.2019; 42(7): 436. CrossRef
Primary squamous cell carcinoma of the extrahepatic bile duct: A case report
Ana Delgado Maroto, Andrés Barrientos Delgado, Marta Lázaro Sáez, Samia Hallouch Toutouh, Enrique Práxedes González
Gastroenterología y Hepatología (English Edition).2019; 42(7): 436. CrossRef

Brief Case Report

Post-transplant Amputation Traumatic Neuroma of the Hilum and Extrahepatic Duct in a Liver Donor: Na Rae Kim, Hyun Yee Cho, Dong Hae Chung, Keon Kuk Kim, Jae Hee Cho, Seung Joon Choi; J Pathol Transl Med. 2018;52(3):191-194. Published online August 4, 2017; DOI: https://doi.org/10.4132/jptm.2017.01.20

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Biliary tree traumatic neuroma following laparoscopic cholecystectomy: A case report and literature review
Hemn Kaka Ali, Dana Gharib, Marwan Hassan, Ari Abdullah, Deari Ismaeil, Omar Ghalib Hawramy, Dlshad Ahmed, Dilan Hiwa, Berun Abdalla, Fahmi Kakamad
Medicine International.2023;[Epub] CrossRef
Hilar Biliary Amputation Neuroma Following Liver Transplant: A Case Report and Review of the Literature for this Diagnostic and Therapeutic Challenge
Sarang Thaker, Najib Nassani, Bartlomiej Lukasz Radzik, Christine Chan, Wadih Chacra, Sean Koppe, Grace Guzman, Adam E. Mikolajczyk
Transplantation Direct.2022; 8(12): e1405. CrossRef

Review

The Continuing Value of Ultrastructural Observation in Central Nervous System Neoplasms in Children: Na Rae Kim, Sung-Hye Park; J Pathol Transl Med. 2015;49(6):427-437. Published online October 13, 2015; DOI: https://doi.org/10.4132/jptm.2015.09.19

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Abstract PDF: Central nervous system (CNS) neoplasms are the second most common childhood malignancy after leukemia and the most common solid organ neoplasm in children. Diagnostic dilemmas with small specimens from CNS neoplasms are often the result of multifactorial etiologies such as frozen or fixation artifact, biopsy size, or lack of knowledge about rare or unfamiliar entities. Since the late 1950s, ultrastructural examination has been used in the diagnosis of CNS neoplasms, though it has largely been replaced by immunohistochemical and molecular cytogenetic studies. Nowadays, pathologic diagnosis of CNS neoplasms is achieved through intraoperative cytology, light microscopy, immunohistochemistry, and molecular cytogenetic results. However, the utility of electron microscopy (EM) in the final diagnosis of CNS neoplasms and investigation of its pathogenetic origin remains critical. Here, we reviewed the distinguishing ultrastructural features of pediatric CNS neoplasms and emphasize the continuing value of EM in the diagnosis of CNS neoplasms.

Case Studies

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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Abstract PDF

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.

Citations

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A Case of Prostatic Signet-Ring Cell-like Carcinoma with Pagetoid Spread and Intraductal Carcinoma and Long-Term Survival: PD-L1 and Mismatch Repair System Proteins (MMR) Immunohistochemical Evaluation with Systematic Literature Review
Nektarios Koufopoulos, Argyro-Ioanna Ieronimaki, Andriani Zacharatou, Alina Roxana Gouloumis, Danai Leventakou, Ioannis Boutas, Dionysios T. Dimas, Adamantia Kontogeorgi, Kyparissia Sitara, Lubna Khaldi, Magda Zanelli, Andrea Palicelli
Journal of Personalized Medicine.2023; 13(6): 1016. CrossRef
Anal canal adenocarcinoma with neuroendocrine features accompanying secondary extramammary Paget disease, successfully treated with modified FOLFOX6: a case report
Masamichi Yamaura, Takeshi Yamada, Rei Watanabe, Hitomi Kawai, Suguru Hirose, Hiroki Tajima, Masashi Sato, Yuichi Uchida, Daisuke Suganuma, Yoshiyuki Yamamoto, Toshikazu Moriwaki, Ichinosuke Hyodo
BMC Cancer.2018;[Epub] CrossRef
Solitary left axillary lymph node metastasis after curative resection of carcinoma at the colostomy site: a case report
Ken Imaizumi, Shigenori Homma, Tadashi Yoshida, Tatsushi Shimokuni, Hideyasu Sakihama, Norihiko Takahashi, Hideki Kawamura, Emi Takakuwa, Akinobu Taketomi
Surgical Case Reports.2016;[Epub] CrossRef

Oncocytic Renal Cell Carcinoma with Tubulopapillary Growth Having a Fat Component: Na Rae Kim, Hyun Yee Cho; J Pathol Transl Med. 2015;49(5):413-417. Published online July 30, 2015; DOI: https://doi.org/10.4132/jptm.2015.07.01

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Abstract PDF: We report a rare case of oncocytic renal cell carcinoma (RCC) with tubulopapillary growth in the background of tuberculous end-stage kidney disease. Histology of the renal mass consisted of oncocytic cells forming solid, thin tubules and rare papillae. The tumor had abundant eosinophilic oncocytic cells containing occasional cytoplasmic Mallory body–like hyaline globules and a tiny focus of clear cells with intervening mature fat. Both the oncocytic cells and clear cells were immunoreactive for a-methylacyl-CoA racemase, vimentin, pancytokeratin, and CD10, and negative for transcription factor E3, CD15, human melanoma black 45, and c-kit. Mallory body–like hyaline globules were positive for CAM 5.2 and periodic acid–Schiff with or without diastase. Ultrastructurally, the tumor cells had abundant cytoplasmic mitochondria. The present case is a rare case of oncocytic RCC with tubulopapillary growth pattern. The case is unique in that the tumor was mixed with fat component, which is not common in RCC and thus can lead to misdiagnosis.

Brief Case Report

A Case of Primary Subpleural Pulmonary Microcystic Myxoma Coincidentally Occurred with Pulmonary Adenocarcinoma: Jungsuk Ahn, Na Rae Kim, Seung Yeon Ha, Keun-Woo Kim, Kook Yang Park, Yon Mi Sung; J Pathol Transl Med. 2015;49(3):274-278. Published online May 15, 2015; DOI: https://doi.org/10.4132/jptm.2015.03.12

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Endobronchial Myxoma
Arindam Mukherjee, Ritesh Agarwal, Sahajal Dhooria, Pawan Singh, Amanjit Bal, Harkant Singh, Inderpaul S. Sehgal
Journal of Bronchology & Interventional Pulmonology.2018; 25(4): 335. CrossRef

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