**4. Classification of endometriosis**

After videolaparoscopy, endometriosis can be classified according to the histological type of the implants, with the anatomical location of the disease peritoneum, ovary or rectum—or by the extension of the disease to the pelvic organs. The most commonly used classification is that of the American Society of Reproductive Medicine—revised in 1996 [10]. This classification rates minimal, mild, moderate, or severe endometriosis due to the extent of disease in the peritoneum and ovaries, as well as the presence of tube-ovarian and Douglas sack bottom block. This classification, although with some limitations, is quite useful in the orientation of postsurgical treatment, especially when the patient's complaint is infertility.
