What is a unicornuate uterus?
A unicornuate uterus is a uterus that has a single horn and a banana shape. Approximately 65% of women with a unicornuate uterus also have a second smaller or rudimentary uterine horn. The rudimentary horn can be solid or it can have a small cavity with a functioning endometrium. Sometimes the smaller horn connects to the uterus and vagina, but more often it is isolated or non-communicating. A unicornuate uterus is the least common congenital uterine anomaly and represents 1 to 2% of cases. A unicornuate uterus can be asymptomatic. However, women with a functioning non-communicating horn may experience pain during periods, because there is no outlet for the menstrual fluid. Women with a unicornuate uterus are at risk of reproductive complications. They may have a difficult time becoming pregnant because typically only one fallopian tube functions. In fact the condition is sometimes first discovered when a women undergoes an infertility investigation. Pregnancy can occur with a unicornu
