Primary malignant fibrous histiocytoma of the stomach: (a case report).

A case of primary malignant fibrous histiocytoma (MFH) of the stomach is reported. The patient was a 51-year-old man who had a laparotomy for a malignant gastric tumour diagnosed by radiological studies and endoscopic examination. An inoperable gastric malignancy was found at operation. Histopathological studies of tissue biopsied at surgery showed characteristic light microscopic findings and strong positivity for alpha-1-antitrypsin by immunoperoxidase technique indicating the diagnosis of malignant fibrous histiocytoma. The absence of any other soft tissue or retroperitoneal tumour strongly indicated the stomach is the primary site.