[Multiple primary carcinoid tumor of the stomach of complex structure].

The description of a polymorphic primary multiple stomach carcinoid tumour in a male of 36 is given. The tumour consisted of the nodes showing leiomyolike (spindle cell), pericytic, acinar-trabecular and solid structure; some cells resembled goblet cells. The diagnosis was precised by electron microscopy of the material fixed in formaldehyde in the course of which the neurosecretory granules in the tumour cell cytoplasm were revealed.