title: Composite gastric carcinoid and adenocarcinoma.
abstract: The light microscopical, histochemical and ultrastructural features of an unusual gastric tumour are presented. Microscopically, the neoplasm showed the features of both a conventional carcinoid tumour and of a mucin-producing adenocarcinoma. The ultrastructural demonstration of individual cells containing both endocrine granules and mucin globules supports the view that gastric enterochromaffin cells are of endodermal origin.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology* / Q000648:ultrastructure; D000368:Aged; D002276:Carcinoid Tumor / Q000473:pathology* / Q000648:ultrastructure; D005260:Female; D006651:Histocytochemistry; D006801:Humans; D009378:Neoplasms, Multiple Primary / Q000473:pathology* / Q000648:ultrastructure; D013274:Stomach Neoplasms / Q000473:pathology* / Q000648:ultrastructure