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Primary lung hyalinizing clear cell carcinoma: a diagnostic challenge in biopsy
Yanling Zhang1, Wen Han2, Jun Zhou3
1Department of Oncology, Anhui Wanbei Coal-Electricity Group General Hospital, Suzhou, China.
Introduction:
Hyalinizing clear cell carcinomas (HCCCs) are rare, low-grade, malignant tumors. They most commonly involve the minor salivary glands of the head and neck. HCCC that occurs in uncommon locations and examining samples from small biopsy pose a diagnostic challenge for most pathologists.
Case Presentation:
We herein report a primary pulmonary HCCC diagnosed by small biopsy and summarize its histologic, immunophenotypic, and molecular features along with a review of 11 previously reported cases to emphasize the potential diagnostic pitfalls.
Conclusions:
Small biopsy diagnosis of primary pulmonary HCCC is challenging. A collection of mimics needed to be ruled out. Awareness of the key morphologic features of pulmonary HCCC combined with essential immunohistochemistry and molecular tests contributes to the correct diagnosis.
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