A RARE CASE OF PREGNANCY IN THE RUDIMENTARY UTERINE HORN

Abstract

BACKGROUND: An unicornuate uterus with a rudimentary horn is a uterine anomaly resulting from the incomplete development of one of the Mullerian ducts and an incomplete fusion with the banana shaped contralateral side, normally developed horn. In 83% of patients, the rudimentary horn has no direct connection to the endometrial cavity of normal horn. Pregnancy in rudimentary horn is a rare clinical condition with a reported incidence of 1 in 1, 00,000-1, 40,000 pregnancies. It is postulated that the sperm or fertilized ovum migrates transperitoneally from the contralateral tube to the tube connected to rudimentary horn and eventually implanted into the endometrial cavity of that rudimentary horn. Usually the diagnosis may missed and may present as an emergency with hemoperitonium. Therefore this case highlights the importance of early ultrasound in detecting uterine anomalies and need for high clinical suspicion.