Rupture of pregnant noncommunicating uterine horn with fetal salvage.

A case is presented of pregnancy in an uncommunicating rudimentary uterine horn. The pregnancy proceeded to 31 gestational weeks, when the rudimentary horn ruptured. At laparotomy the surviving fetus was lying free in the peritoneal cavity, was delivered breech and subsequently did well. This is the fifth case reported of rupture of a pregnant rudimentary horn with neonatal and maternal survival.