Ultrastructural, in vitro radioautographic, and stereological study of the morphogenesis of ovarian cystic formations in women of reproductive age distinguished ovariopathy as a common pathological phenomenon, developing as a result of the ovarian follicular cell regenerative and plastic insufficiency syndrome. Degenerative dystrophic changes in the follicular compartment, reduced biosynthetic reactions in the follicular cells, and reactive sclerosis of the stroma remodulate the parenchyma-stromal relationships.