Sclerosing pneumocytoma: A case report
Sclerosing pneumocytoma is a rare benign lung neoplasm seen in middle aged adults with a female predominance. Originally thought to be vascular in origin, this rare entity is now understood to be epithelial in nature. On imaging, sclerosing pneumocytoma manifests as a well circumscribed nodule or mass, often juxtapleural in location. On histopathology, sclerosing pneumocytoma is composed of cuboidal “surface cells” and round “stromal cells,” both of which show nuclear staining for thyroid transcription factor-1 (TTF-1). Here we review the existing literature on sclerosing pneumocytoma and present a case of sclerosing pneumocytoma in a highly unusual endobronchial location.

This case is a 43 year old woman who presented with chronic cough. Endoscopic biopsy was performed, and pathologic diagnosis was confirmed.

Source: Medicine: April 2019 - Volume 98 - Issue 15 - p e15038

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