Pelvic abscess in the second half of pregnancy after oocyte retrieval for in-vitro fertilization: case report.

We describe a very late manifestation of pelvic abscesses after oocyte retrieval for in-vitro fertilization (IVF). In a twin pregnancy achieved after intracytoplasmic sperm injection, rupture of bilateral ovarian abscesses occurred at the end of the second trimester. An emergency laparotomy was necessary because of an acute abdomen. This complication led to severe maternal and neonatal morbidity, preterm birth and neonatal death. The rare occurrence of acute abdomen in pregnancy due to pelvic infection and the non-specific symptoms of a pelvic abscess after oocyte retrieval for IVF are discussed.