Vulvar yolk sac tumor
Vulvar yolk sac tumor is a highly malignant tumor of germ cells in the ovary. It is one of the rare malignant tumors of the vulva. For the vulva, a hard, active, painless mass occurs. The mass varies in size. Some are only swelling of the vulva, and there are tenderness when ulcers appear on the surface or cellulitis.
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