Lobulated ovary as a rare congenital anomaly: MR findings.

The congenital anomaly of the ovary is classified as a supernumerary, accessory, and lobulated ovary (LO). Although the former two entities are anomalies of abnormal location, LO is a category of morphological abnormality of the ovary. There are several case reports of this entity; however, most of them were diagnosed during surgery or histopathologically. One case report included ultrasound findings, with the diagnosis confirmed during surgery. We report a young-adult case with LO diagnosed and followed up with MR. Although LO is a rare congenital anomaly, it might be misdiagnosed as malignant tumors, as in our case. Therefore, radiologists and gynecologists should look out for this entity in MR findings, which can prove to be crucial in preventing unnecessary surgery.