IMMATURE OVARIAN TERATOMA WITH PERITONEAL GLIOMATOSIS AND ELEVATED SERUM ALPHA-FETOPROTEIN ASSOCIATED WITH A 2ND MATURE TERATOMA

A 7-year-old girl had a huge immature grade 2 teratoma of the left ovary with peritoneal gliomatosis and elevated serum alpha-fetoprotein (AFP). The serum AFP level reached 3543 ng/ml and returned to normal after left salpingo-oophorectomy and chemotherapy. Twenty-two months later, a second mature teratoma was removed from the left subdiaphragmatic region. The AFP level had been within the normal range and the patient had been symptom-free for 3 years following the previous operation. AFP was positive in the tubular epithelium of the immature tissues on immunohistochemical study.