What are germ cell and sex cord stromal cells? Germ cells and sex cord stromal cells form when a fetus (baby) is developing. A fetus is made from a sperm cell and an egg cell. Germ cell tumors (GCTs) ...
Germ cell ovarian tumours begin in the ovarian cells that develop into eggs (germ cells). They are rare and usually affect people up to their early 30s. You usually have surgery to remove the tumour.