Peritoneal inclusion cysts in an adolescent female: A case report and review of the literature.

Several studies have shown that most peritoneal inclusion cysts (PIC) cases occur almost exclusively in women of childbearing age and patients who have had abdominal or pelvic surgery. We report a case of PIC diagnosed in a 19 years old single adolescent female with chronic pelvic pain and secondary amenorrhea with no prior history of abdominal surgery. A multilocular abnormality in the pelvis and a septated pelvic fluid encompassing the ovaries and extending to the right iliac fossa was revealed by ultrasound images and Magnetic Resonance Imaging (MRI), respectively. She was treated with broad-spectrum antibiotics, and after symptoms persisted, a laparoscopic exploration that resolved all symptoms was performed. After histological analysis, she was diagnosed with peritoneal inclusion cysts. PICs are a rare non-ovarian cause of cystic pelvic lesions and should be considered in its differential diagnosis. Furthermore, diagnostic laparoscopy can be performed when no precise radiological diagnosis is obtained. Surgical excision of all visible cyst walls remains the best-recommended treatment.