[Gangliocytic paraganglioma of the duodenum].

A duodenal gangliocytic paraganglioma was found to be the cause of nonspecific abdominal complaints in a 68-year-old man with a known carcinoma of the rectum and the prostate. The duodenal gangliocytic paraganglioma is generally regarded as being benign. In this case it is shown to be an additional tumor in a patient with two pre-existent malignancies.