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Stromal tumour of the stomach.

Stromal tumours of the stomach originate in the mesenchymal elements of the gastric wall and express the CD-117 protein.1 They are submucosal and may be classified according to their morphologic features: endogastric (the most frequent type, in which the bulk of the tumour projects into the gastric lumen), exogastric (in which the tumour projects into the peritoneal cavity), combined endo-and exogastric, and intramural.2 The peak incidence is in the sixth decade.2 Although mostly benign, these tumours exhibit a spectrum of clinical behaviour that may be difficult to predict even on the basis of histologic examination.1 I describe here a case of an endogastric stromal tumour associated with localized serosal hyperemia.