What is endometriosis?

Deposits of endometrium outside of the uterus that respond to hormonal cycles Prevalence in United States is 2% among fertile women and 3- to 4-fold greater in infertile women Symptoms and signs: -Dysmenorrhea -Constant aching lower abdominal pain, beginning 2–7 days before the onset of menses and increasing in severity until menstrual flow subsides -Infertility -Dyspareunia Ultrasound often shows complex fluid-filled masses that cannot be distinguished from neoplasms