Sigmoid colon perforation into the lesser sac.
D003093:Colitis, Ulcerative / Q000150:complications* / Q000000981:diagnostic imaging; D012809:Colon, Sigmoid / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D009852:Omentum / Q000000981:diagnostic imaging; D011859:Radiography; D012422:Rupture, Spontaneous / Q000000981:diagnostic imaging / Q000209:etiology