- Hepatoid thymic carcinoma: a case report of a rare subtype of thymic carcinoma
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Ji-Seon Jeong, Hyo Jeong Kang, Uiree Jo, Min Jeong Song, Soon Yeol Nam, Joon Seon Song
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J Pathol Transl Med. 2021;55(3):230-234. Published online April 14, 2021
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DOI: https://doi.org/10.4132/jptm.2021.03.10
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- Hepatoid thymic carcinoma is an extremely rare subtype of primary thymus tumor resembling “pure” hepatoid adenocarcinomas with hepatocyte paraffin 1 (Hep-Par-1) expression. A 53-year-old man presented with voice change and a neck mass. Multiple masses involving the thyroid, cervical and mediastinal lymph nodes, and lung were detected on computed tomography. Papillary thyroid carcinoma was confirmed by biopsy, and the patient underwent neoadjuvant chemoradiation therapy. However, the anterior mediastinal mass was enlarged after the treatment whereas the multiple masses in the thyroid and neck decreased in size. Microscopically, polygonal tumor cells formed solid sheets or trabeculae resembling hepatocytes and infiltrated remnant thymus. The tumor cells showed immunopositivity for cytokeratin 7, cytokeratin 19, and Hep-Par-1 and negativity for α-fetoprotein. Possibilities of germ cell tumor, squamous cell carcinoma, and metastasis of thyroid papillary carcinoma were excluded by immunohistochemistry. This report on the new subtype of thymic carcinoma is the third in English literature thus far.
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Citations
Citations to this article as recorded by  - Hepatoid tumors of the gastrointestinal/pancreatobiliary district: morphology, immunohistochemistry, and molecular profiles
Paola Mattiolo, Aldo Scarpa, Claudio Luchini
Human Pathology.2023; 132: 169. CrossRef
- Primary squamous cell carcinoma of the salivary gland: immunohistochemical analysis and comparison with metastatic squamous cell carcinoma
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Uiree Jo, Joon Seon Song, Seung-Ho Choi, Soon Yuhl Nam, Sang Yoon Kim, Kyung-Ja Cho
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J Pathol Transl Med. 2020;54(6):489-496. Published online August 31, 2020
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DOI: https://doi.org/10.4132/jptm.2020.07.19
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 Supplementary Material
- Background
Primary squamous cell carcinoma (SCC) of the salivary gland is a rare disease, and distinguishing primary SCC from metastatic SCC is difficult. This study investigated the histological and immunohistochemical differences between primary and metastatic salivary gland SCC to improve the accuracy of diagnosis and to explore the pathogenesis of this disease.
Methods
Data of 16 patients who underwent surgery for SCC of salivary glands between 2000 and 2018 at Asan Medical Center were retrieved. Eight patients had a history of SCC at other sites, and eight patients had only salivary gland SCC. Immunostaining for p16, p53, androgen receptor (AR), gross cystic disease fluid protein 15 (GCDFP-15), and c-erbB2, as well as mucicarmine staining, were compared between the two groups.
Results
Most tumors were located in the center of the salivary glands with extraparenchymal extension. The histology of primary SCC of the salivary gland was consistent with moderately differentiated SCC with extensive desmoplastic reaction and peritumoral inflammation. Involvement of the salivary gland ducts and transition into the ductal epithelium were observed in two cases. Metastatic SCC resembled the primary tumor histologically and was associated with central necrosis. Both groups exhibited negative mucin staining. Two, one, and one primary SCC case exhibited AR, GCDFP-15, and c-erbB2 positivity, respectively.
Conclusions
A subset of primary SCCs originated in salivary ducts or was related to salivary duct carcinoma. Distinguishing primary from metastatic SCC of the salivary gland is difficult using histologic features and immunoprofiles. A comprehensive review of the medical history is essential.
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Citations
Citations to this article as recorded by - Pembrolizumab as a first line therapy in a patient with extensive mucoepidermoid salivary gland carcinoma. A complete clinical, radiological and pathological response. A very specific case
Raed Farhat, Noam Asna, Yaniv Avraham, Ashraf Khater, Majd Asakla, Alaa Safia, Sergio Szvalb, Nidal Elkhatib, Shlomo Merchavy
Discover Oncology.2022;[Epub] CrossRef - Morphologic CT and MRI features of primary parotid squamous cell carcinoma and its predictive factors for differential diagnosis with mucoepidermoid carcinoma
Xiaohua Ban, Huijun Hu, Yue Li, Lingjie Yang, Yu Wang, Rong Zhang, Chuanmiao Xie, Cuiping Zhou, Xiaohui Duan
Insights into Imaging.2022;[Epub] CrossRef - A Rare Case of Primary Squamous Cell Carcinoma of the Submandibular Salivary Gland: Brief Overview of Diagnostic Ambiguity and Treatment Challenges
Pawan Hingnikar, Anendd Jadhav, Nitin D Bhola
Cureus.2022;[Epub] CrossRef - Necrotizing Sialometaplasia of the Hard Palate: Diagnosis and
Treatment
Sangeun Lee, Yun Sung Lim, Kyuho Lee, Bo Hae Kim
Journal of Clinical Otolaryngology Head and Neck
Surgery.2022; 33(4): 236. CrossRef - Parotid Salivary Duct Carcinoma With a Prominent Squamous Component: Immunohistochemical Profile, Diagnostic Pitfalls, and Therapeutic Implications
Naomi Hardy, Joshua Thompson, Ranee Mehra, Cinthia B. Drachenberg, Kyle Hatten, John C. Papadimitriou
International Journal of Surgical Pathology.2021; 29(7): 726. CrossRef - Intrasalivary Thymic Carcinoma: A Case Report and Literature Review
Michał Kunc, Alexandra Kamieniecki, Grzegorz Walczak, Tomasz Nowicki, Bartosz Wasąg, Bogusław Mikaszewski, Dominik Stodulski, Wojciech Biernat
Head and Neck Pathology.2021; 16(3): 857. CrossRef - Cancer Stem Cell Markers in Squamous Cell Carcinomas of the Salivary Glands
Mattis Bertlich, Julia Kitz, Marie Kruizenga, Jennifer Lee Spiegel, Martin Canis, Friedrich Ihler, Frank Haubner, Bernhard G. Weiss, Mark Jakob
Oncology.2021; 99(6): 402. CrossRef
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