Ruptured Rudimentary Horn Pregnancy at 20 Weeks of Gestation in a Primigravida: a Case Report

Unicornuate uterus occurs due to a complete or partial non development of one mullerian duct1. Sometimes it is associated with a rudimentary horn, which may consist of functional cavity which is usually non - communicating or it may be small solid muscle with no functional endometrium. Pregnancy in rudimentary horn is rare and usually terminates in rupture during first or second trimester of pregnancy. Diagnosis is usually made at laparotomy. Ultrasound may help in pre-operative diagnosis. A case of 37 yr old primigravida with acute abdomen is reported here. Laparotomy revealed unicornuate uterus with rupture of rudimentary horn on left side. The incidence, diagnosis and management of such cases are discussed.