Hematometra of the rudimentary horn of a unicornuate uterus resulting fromcesarean section

A 30-year-old woman complained of increasing dysmenorrhea and progressive r ight lower-quadrant pain after cesarean section. A pelvic mass was observed and subsequently a congenital mullerian anomaly was diagnosed upon serial examination. We report the first apparent case of hematometra of the rudime ntary horn of a unicornuate uterus resulting from cesarean section.