title: A patient with hematochezia and intestinal obstruction.
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Hospital, Incheon, Korea.
authors.forename: Kyong Yong
authors.initials: KY
authors.lastname: Oh
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Hospital, Incheon, Korea.
authors.forename: Yoon Jae
authors.initials: YJ
authors.lastname: Kim