Dysgerminoma，Wikipedia的介绍 A dysgerminoma is a type of germ cell tumor; it usually is malignant and usually occurs in the ovary. A tumor of the identical histology but not occurring in the ovary may be described by an alternate name: seminoma in the testis or germinom in thecentral nervous system or other parts of the body. Dysgerminoma is the most common type of malignant germ cell ovarian cancer, although it accounts for less than …