The malignancy of gastro-intestinal carcinoids is dependent on localisation and size of the tumor. Tumors of the small bowel seem to have a tissue infiltration depth and extension independent of the primary tumor size. We give a case report of a patient with a carcinoid tumor in the terminal ileum with a diameter of 5 mm and a tissue infiltration depth to submucosa. Based on the immunohistochemical investigation of lymphnode metastases for little, accidentally found carcinoids in the ileum a hemicolectomy with wide mesenteric lymph resection is necessary.
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