“…According to the cases that have been reported to date, three possible etiologies might be responsible: [1] adnexal torsion, [2] tubal and ovarian maldevelopment secondary to ischemia due to a vascular accident, and [3] a defect in the development of the M€ ullerian and mesonephric system, either entirely on one side or localized to the region of the genital ridge and the caudal part (1,(4)(5)(6).…”