Ampullary ganglioneuroma: an unusual feature of neurofibromatosis type 1--a case report.

The case of a 65 year old man is presented. He had a history of dyspepsia and was diagnosed as neurofibromatosis clinically. Upper G.I. endoscopy showed thickened folds in duodenum. A polyp was seen at the junction of D1 and D2 adjacent to the ampulla. Duodenal biopsy results were suggestive of ganglioneuroma.