Retroperitoneal mixed germ cell tumor mimicking a renal neoplasm: a case report

Abstract

Retroperitoneal malignant germ cell tumors (GCTs) are rare and of uncertain origin. Almost all retroperitoneal GCTs with seminomatous histology have been reported in male patients. Pediatric hypertension in a girl secondary to a retroperitoneal mixed GCT (dysgerminoma plus mature monodermal teratoma) has not been reported previously in the literature. We present the first case of an 11-year-old girl with a retroperitoneal mixed GCT presenting with hypertension.