[Schwannomas and schwannosarcomas of the duodenum and the duodenojejunal angle. Apropos of 3 cases].

The authors report on three cases of benign neurogenic tumors of the duodenum, two of which degenerated. They discuss the difficulties involved in diagnosis and treatment. In one case, the tumor was simply excised. In the two cases of malignant tumors, the excision was wider because of extensions to the liver or colon. Postoperative chemotherapy was applied in both cases, but to little effect as the two patients died within two years of the operation.