title: Retroperitoneal gas after colonoscopy.
mesh_terms: D003106:Colon / Q000293:injuries; D003113:Colonoscopy / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008875:Middle Aged; D011859:Radiography; D012188:Retropneumoperitoneum / Q000000981:diagnostic imaging / Q000209:etiology*