Ovarian Dysgerminoma with Massive Metastases to Para-Aortic Lymph Nodes

We report on a 15-year-old female with left ovarian dysgerminoma accompanied by massive swelling of the para-aortic lymph nodes which was clearly demonstrated by preoperative magnetic resonance imaging (MRI). Metastasis to the para-aortic lymph nodes from dysgerminoma was confirmed by biopsies obtained during surgery. No study has previously reported dysgerminoma with massive para-aortic lymph node metastases clearly demonstrated by MRI. These preoperative MRI findings are presented here. The patient received six cycles of cisplatin-based combination chemotherapy with the BEP regimen (bleomycin, etoposide and cisplatin) after conservative surgery, and no residual para-aortic lymph nodes were detected by MRI or CT after the chemotherapy.