Presentation of a Müllerian anomaly with outflow obstruction after tubal ligation

To report an unusual presentation of a patient with unicornuate uterus and a noncommunicating functional rudimentary horn and discuss related patient management issues. University hospital. A 27-year-old woman who presented with cyclic abdominal pain after a postpartum tubal ligation. Diagnostic studies followed by a laparotomy and resection of the rudimentary horn. Resolution of patient’s symptoms. Patients with a unicornuate uterus and a rudimentary horn recognized for the first time during a tubal ligation require individualized management depending in part on the precise nature of the horn.