Early Contralateral Recurrence of Ovarian Endometriosis After Unilateral Surgery: A Case Report.

Endometriosis is a gynecological condition that primarily affects women of reproductive age and is a leading cause of infertility. Ovarian endometriomas (OMAs) are cystic forms often seen in advanced stages of the disease. This report describes the case of a 26-year-old patient who developed a contralateral OMA three months after laparoscopic excision of a left OMA. She presented with lower abdominal pain, dysmenorrhea, and menstrual irregularities. Imaging confirmed a unilocular cyst in the right ovary, and laparoscopic removal verified an endometriotic cyst. This case highlights the potential for early recurrence and contralateral involvement in advanced endometriosis. These findings underscore the importance of careful postoperative monitoring and counseling, with attention to anatomical distribution, disease stage, age, and reproductive history to guide follow-up and management.