Isolated Intestinal Ganglioneuroma Mimicking Small Bowel Crohn's Disease.

Ganglioneuromas (GNs) are hamartomatous tumors derived from the autonomic nervous system. GNs are frequently associated with neurofibromatosis-1 and multiple endocrine neoplasia type 2b and commonly present with constipation, abdominal pain, weight loss, obstruction, and gastrointestinal bleeding. We report a 40-year-old man with symptoms of chronic abdominal pain, weight loss, and diarrhea for 1 year. Imaging was suggestive of thickening of ileal wall with a stricture, and subsequent biopsy revealed intestinal GN. To our knowledge, this is the first case report of an isolated intestinal GN masquerading as Crohn's disease.