title: Specific acute colonic disorders.
abstract: This article reviews a variety of specific colonic disorders that may have been an acute clinical presentation. Less common causes of colonic obstruction include volvulus, intussusception, and hernias. Nonobstructive colonic dilatation is most often due to pseudo-obstructions and toxic megacolon. Several miscellaneous disorders discussed include colonic perforation, complications of leukemia that may affect the colon, and pseudomembranous colitis. The pathogenesis and clinical aspects of these disorders are reviewed, but the radiologic features are emphasized.
authors.affiliation: Department of Radiology, Bowman Gray School of Medicine, Wake Forest University, Winston-Salem, North Carolina 27157-1088.
authors.forename: D J
authors.initials: DJ
authors.lastname: Ott
authors.forename: M Y
authors.initials: MY
authors.lastname: Chen
mesh_terms: D000208:Acute Disease; D003106:Colon / Q000000981:diagnostic imaging; D003108:Colonic Diseases / Q000000981:diagnostic imaging* / Q000209:etiology; D004108:Dilatation, Pathologic / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging / Q000209:etiology; D011859:Radiography