Appendiceal endometriosis in pregnancy. Report of a case with perforation and review of the literature.

A 25-year old woman at the 26th week of gestation underwent surgery for possible acute appendicitis. Pathological examination of the appendix showed extensive decidual change through the entire wall with perforation and surrounding acute inflammatory cell infiltration. To our knowledge, the present report is the second case of appendiceal endometriosis with this rare complication in the literature. The previously reported cases of appendiceal endometriosis which manifested clinically during pregnancy are briefly reviewed.