Gastric tumors in patients with pulmonary chondroma or extra-adrenal paraganglioma: an ultrastructural study.
Arch Pathol Lab Med
; 105(10): 527-31, 1981 Oct.
Article
em En
| MEDLINE
| ID: mdl-6895164
ABSTRACT
The histogenesis of a distinctive metastasizing intramural gastric tumor found in patients with extra-adrenal paragangliomas, pulmonary chondromas, or both, is unknown. By light microscopy, it has appeared to be of smooth-muscle derivation, and it has been interpreted as being epithelioid leiomyosarcoma. For further clues to its nature, we studied three examples by electron microscopy (two obtained from patients with extra-adrenal paragangliomas and one from a patient with pulmonary chondroma). Ultrastructurally, they were characterized by interdigitating cytoplasmic processes, plasma membrane-associated dense patches, an incomplete basement membrane, junctional complexes, randomly oriented filaments without periodicity, cytoplasmic dense bodies, pinocytotic vesicles, clustering of mitochondria, and rare cilia-features of normal smooth muscle or of smooth-muscle tumors with classic histologic patterns. Thus, the findings suggest that the three tumors we studied are of smooth-muscle derivation.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Paraganglioma
/
Neoplasias Gástricas
/
Condroma
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Neoplasias Pulmonares
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Neoplasias Primárias Múltiplas
Limite:
Adolescent
/
Adult
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Child
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Female
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Humans
Idioma:
En
Ano de publicação:
1981
Tipo de documento:
Article