title: Iatrogenic Colonic Perforation due to Computed Tomographic Colonography.
abstract: Although the complications of computed tomographic colonography (CTC) are very rare, CTC is associated with potential risk of colonic perforation. In the present report we describe two cases of colonic perforation secondary to CTC. In the first case with ascending colonic carcinoma, insertion of a rigid double-balloon catheter caused direct rectal wall perforation. In the second case with obstructive colonic carcinoma, pneumoperitoneum developed due to automated carbon dioxide insufflation. Both patients were asymptomatic after examination and recovered without any complications. Based on the findings of the current cases, we recommend that a soft-tip catheter be used for CTC, and suggest that colonic perforation can occur even with automatic insufflation, depending on patient characteristics.
authors.affiliation: Departments of Internal Medicine, Hokkaido Gastroenterology Hospital, Sapporo, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kato
authors.affiliation: Departments of Radiology, Ishikari Hospital, Ishikari, Japan.
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Muroya
authors.affiliation: Departments of Gastroenterology, Ishikari Hospital, Ishikari, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Goda
authors.affiliation: Departments of Radiology, Hokkaido Gastroenterology Hospital, Sapporo, Japan.
authors.forename: Ken
authors.initials: K
authors.lastname: Takabayashi
authors.affiliation: Departments of Internal Medicine, Hokkaido Gastroenterology Hospital, Sapporo, Japan.
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Sasaki
authors.affiliation: Departments of Pathology, Hokkaido Gastroenterology Hospital, Sapporo, Japan.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Takahashi
authors.affiliation: Departments of Internal Medicine, Hokkaido Gastroenterology Hospital, Sapporo, Japan.
authors.forename: Shoichi
authors.initials: S
authors.lastname: Horita
keywords: Complication; Computed tomographic colonography; Perforation; Pneumoperitoneum