http://www.ranker.com/list/list-of-digestive-system-diseases-and-disorders-v1/bennides05,
Alagille syndrome
Ulcerative colitis
Whipple's disease
Wilson's disease
Zollinger–Ellison syndrome
Gastric Ulcers
Viral Gastroenteritis
Anatomic Problems of the Colon
Abdominal Adhesions
Anal and Rectal Problems