Adenocarcinoma in a mature cystic teratoma. A case report.

: A mucin-producing adenocarcinoma arose in a well-differentiated, mature, cystic teratoma. The patient underwent a total abdominal hysterectomy, left salpingo-oophorectomy, omentectomy and paraaortic lymph node biopsy. The prognosis is unfavorable when the tumor extends through the cyst wall and involves intraperitoneal structures.