Staging is a way of describing how mild or severe a condition is. The stage of the endometriosis is determined by looking at the uterus, fallopian tubes, and ovaries and inside the abdomen and lower pelvic area. Usually, this is done with a viewing instrument inserted through a small incision in the belly (laparoscopy). But endometriosis is sometimes first found during surgery for an unrelated condition. Endometriosis is classified in four stages:Stage I: minimalStage II: mild Stage III: moderateStage IV: severeThe stage of the endometriosis is based on the:Location of endometriosis growths (implants).Number of places the implants are found.Depth the implants penetrate into normal tissue.Severity of the scar tissue (adhesions) around the implants.
Some women with endometriosis do not have symptoms. Other women have symptoms that range from mild to severe. Endometriosis symptoms are often most severe just before and during the menstrual cycle and get better as the menstrual period is ending.