[Colonic involvement in systemic mastocytosis (author's transl)].

The most common gastrointestinal lesions encountered in systemic mastocytosis are the gastric, duodenal and small bowell lesions. The authors present a case of diffuse colonic involvement diagnosed on a double contrast examination. The radiological signs correlated with the endoscopical and histological findings are due to a submucosal edema and a polymorphic cellular infiltrate. The involvement of the colon is probably more frequent then previously thought. It could explain the diarrhea encountered in some patients affected by this disease.