Ovarian cysts can be physiologic or pathologic.1 Common physiologic cysts include follicular cysts, in which the follicle fails to rupture after it grows and continues to enlarge to form a cyst.2 There is also a type of cyst, luteal cysts, in which the corpus luteum forms a cyst after the follicle is ruptured and discharged.3 These two types of cysts are physiologic and usually disappear after two menstrual cycles.4 Tumors of the ovary are pathologic. These two kinds of cysts are physiological and usually disappear after two menstrual cycles.3. Tumors of the ovary are pathologic, and the exact cause of their development is not very clear. Therefore, if the cyst still exists after two clean menstrual cycles, surgical treatment is needed because ovarian cysts may develop malignant changes or may be reversed.