European Journal of Gynaecological Oncology (EJGO) is published by IMR Press from Volume 40 Issue 1 (2019). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on imrpress.com as a courtesy and upon agreement with S.O.G.
Extragonadal retroperitoneal endodermal sinus tumor in an eight-month-old female infant
We describe a rare case of an extragonadal retroperitoneal endodermal sinus (yolk sac) tumor in the minor pelvis. Radiologic investigation, which included abdominal ultrasound and computed tomography (CT), showed a large soft tissue mass occupying the pelvic cavity. Radionuclide bone scans demonstrated bone metastases. The serum alpha fetoprotein was elevated. Pathologic examination of the surgical specimen revealed extragonadal yolk sac tumor. Immunohistochemically, the tumor was positive for a-fetoprotein and cytokeratins. After postoperative combination therapy, follow-up CT showed decreasing tumoral disease, while serum alpha fetoprotein returned to normal.