[False perforations of the sigmoid colon caused by straining during defecation: 3 fatal cases of perforated simple ulcer of the sigmoid].
D012809:Colon, Sigmoid / Q000293:injuries*; D003672:Defecation; D006801:Humans; D014456:Ulcer / Q000209:etiology*
DEFECATION; SIGMOID/wounds and injuries; ULCER/etiology