Glomus tumor of the stomach: a case report.

The histologic and ultrastructural features of a gastric glomus tumor are presented with a brief review of the literature. Initially interpreted as carcinoid, the tumor occurred in a 41-year-old female who was first diagnosed by radiological examination and microscopic histological study of an endoscopic biopsy specimen. Glomus tumor was confirmed by further study of multiple sections of a surgical specimen and by electron microscopy. Correct identification of this essentially benign, very rare gastric tumor can prevent unnecessary radical operative procedures.