The ovarian cyst is a sac or pouch filled with liquid that forms in the ovary or on it. The most common are functional cysts, which are formed as a result of ovulation, which are divided into follicular cysts, when the follicle does not open to release the egg; corpus luteum cysts, if the follicle that held the egg is sealed after release. Usually, no specific treatment is necessary since they produce mild symptoms and disappear on their own in about 6 or 7 weeks. In addition, the cysts are common in women of childbearing age, and are usually benign, but can also be malignant or cancerous. In many cases it may require treatment by surgery adequate ovarian cysts: in benign can only remove ovarian area becomes ill, through a laparoscopic intervention ovarian cyst; however, in the case of malignant cysts, often requires removing the entire ovary.