title: Atypical bronchial carcinoid with oncocytoid features. Its ultrastructure, with special reference to its granular content.
abstract: A case of atypical bronchial carcinoid with oncocytoid features was studied. The tumor contained mitochondria-laden cells with scanty neurosecretory granules, heavily granulated cells, and intermediate forms. The neurosecretory granules were of three types as reported in previous cases: type P, type 3, and a double-core granule. The ultrastructural findings are characteristic of this type of tumor.
mesh_terms: D000328:Adult; D001984:Bronchial Neoplasms / Q000473:pathology* / Q000648:ultrastructure; D003528:Carcinoma, Adenoid Cystic / Q000473:pathology* / Q000648:ultrastructure; D006801:Humans; D002479:Inclusion Bodies / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron