Endometriosis

"Endometriosis is when tissue similar to the uterine lining (endometrium) in the uterine cavity appears in an abnormal location — most often in the genital organs outside the uterus, but also in the intestines, urinary system and lungs. This often very painful disease can cause women of childbearing age to have problems conceiving. It is treated hormonally or surgically, or with a combination of both methods. However, treatment is often unsuccessful."