title: Retroperitoneal abscess from perforated sigmoid diverticulitis.
mesh_terms: D000038:Abscess / Q000150:complications* / Q000000981:diagnostic imaging; D004238:Diverticulitis / Q000150:complications* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007416:Intestinal Perforation / Q000150:complications* / Q000000981:diagnostic imaging; D008875:Middle Aged; D011859:Radiography; D012187:Retroperitoneal Space / Q000000981:diagnostic imaging; D012810:Sigmoid Diseases / Q000150:complications* / Q000000981:diagnostic imaging