Capella C, Gabrielli M, Polak JM, Buffa R, Solcia E, Bordi C. Ultrastructural and histological study of 11 bronchial carcinoids. Evidence for different types.
VIRCHOWS ARCHIV. A, PATHOLOGICAL ANATOMY AND HISTOLOGY 1979;
381:313-29. [PMID:
220780 DOI:
10.1007/bf00432474]
[Citation(s) in RCA: 53] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Seven of eleven bronchial carcinoids investigated showed cells with small granules resembling P cells which have already been described in human fetal and adult lung; two of these P cell tumours showed distinctive paraganglioid features. One tumour showed peculiar ultrastructural findings resembling closely those previously reported by Black (1969) in a so called "pulmonary oncocytoma". Three remaining cases showed large secretory granules resembling those of type 3 cells already described by Hage (1973b) in bronchial carcinoids; one of these tumours produced large amounts of 5-hydroxytryptamine (5HT). It is concluded that, on cytological grounds, at least two types of tumours can be distinguished among bronchial carcinoids, i.e. P cell and type 3 cell tumours. Moreover, two varieties of P cell carcinoids have been recognized, showing either the less frequent and more distinctive paraganglioid structure or the more common trabecular structure.
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