[The problems and clinical aspects of primary malignancies of the small intestine (author's transl)].

From 1954 to the end of 1973, 6432 patients were admitted to the Munich University Surgical Hospital for the treatment of malignant tumors of the digestive tract. 42 cases (0.66 percent) affected the small intestine, including the duodenum, but excepting tumors of the ileocecal region, peripapillar duodenal carcinoma, metastatic tumors of the small intestine and mesenteric tumors. The fate of all 42 patients with malignant tumors of the small intestine (6 carcinoids, 15 sarcomas and 21 carcinomas) was elucidated. 14 per cent of the malignant tumors were found in the duodenum, 27 percent in the jejunum and 59 per cent in the ileum.