Perforation of the sigmoid colon during pregnancy: a rare complication of endometriosis. Case report.

Perforation of the sigmoid colon in a 28-year-old woman during the 37th week of pregnancy is reported. There was almost complete replacement of the bowel wall by endometriotic tissue showing extensive decidualization of its stroma. This appears to be a very rare complication of endometriosis and the effects of pregnancy upon endometriosis are briefly reviewed.