Retroperitoneal Dermoid Cyst Between the Rectum and Vagina: A Case Report

Mature cystic teratomas are rare neoplasms and consist of at least two to three embryonic layers. While these tumors are most commonly seen in the testes and ovaries, they have been reported elsewhere.

Case Report: 

A 22-year-old female patient referred to Mehr Hospital in Mashhad with symptoms of pelvic pain, tympanites, altered bowel habits, nausea, and vomiting. According to the performed examinations and evaluations, a mass of 37 × 20 mm was found in the retroperitoneum between the vagina and rectum. The patient underwent laparoscopic surgery and the cyst was completely resected. The patient was discharged a day after the surgery and no surgical complications were reported in conducted follow-ups. The pathologic finding also reported a dermoid cyst.

Resection surgery is the mainstay in the treatment of mature retroperitoneal teratomas. Although tumor characteristics can be diagnosed preoperatively by imaging modalities, a definitive diagnosis can only be made by histologic evaluations.