Diffuse ileal ganglioneuromatosis mimicking a gastrointestinal stromal tumor: A case report.

Rationale: Intestinal ganglioneuromatosis (IGNM) is a rare disease, defined by an abnormal proliferation of ganglion cells, nerve fibers and Schwann cells in the enteric nerve system.

Patient Concerns: A 54-year-old woman presented with a one-year history of recurrent episodes of hypogastric pain, with vomiting, nausea, melena, and weight loss of 10 kg in recent 5 months.

Diagnoses: The patient was diagnosed as a diffuse IGNM by pathological examination.