A unicornuate uterus is a type of congenital uterine anomaly where a woman has a uterus that is shaped like a banana, instead of the typical pear shape. This condition occurs when one side of the uterus fails to develop properly during fetal growth, resulting in a single, elongated uterine cavity. Women with a unicornuate uterus may experience complications during pregnancy, such as an increased risk of miscarriage or preterm birth. Regular monitoring and medical care can help manage these risks, allowing many women to have successful pregnancies despite this condition.