Port-site metastasis after laparoscopic surgery for mature cystic teratoma.

In this case, a 27-year-old nulliparous woman with a pelvic multiple cystic mass was treated and found with ovarian mature cystic teratoma associated with port-site metastasis (PSM). Suspecting recurrence of mature cystic teratoma, a second laparoscopic surgery found a small mass, on the right under abdomen's peritoneal membrane, at the laparoscopic port sites of the initial operation. Pathological report of the peritoneal mass and left ovarian tumor confirmed a mature cystic teratoma. To the best of the authors' knowledge, this is the first reported PSM in associated with benign ovarian tumor.