Polycystic ovary syndrome is still the most mysterious and complex disease among those who have to face a gynecologist. PCOS is one of the reasons of disorders of the menstrual cycle and woman infertility, forcing young girl and women to consult a doctor. The first clinical picture of this pathology was declared by Stein and Leventhal in the last century. Thus PCOS is also called Stein-Leventhal syndrome.