What Is Endometriosis?
Endometriosis is a chronic, often painful gynecologic condition in which tissue similar to the endometrium—the mucosal lining of the uterus—grows outside the uterine cavity. This ectopic tissue most c
Endometriosis is a chronic, often painful gynecologic condition in which tissue similar to the endometrium—the mucosal lining of the uterus—grows outside the uterine cavity. This ectopic tissue most commonly implants on pelvic structures such as the ovaries, fallopian tubes, uterosacral ligaments, and peritoneal surfaces; less frequently, it may involve distant sites like the diaphragm, lungs, or even surgical scars. Unlike the normal endometrium, this misplaced tissue lacks an exit pathway during menstruation, leading to cyclic inflammation, hemorrhage, fibrosis, and the formation of adhesions and ovarian endometriomas (“chocolate cysts”).
The hallmark symptoms include progressively worsening dysmenorrhea (painful menstruation), chronic pelvic pain, deep dyspareunia (pain during intercourse), and infertility—present in up to 40% of affected individuals seeking fertility care. Other manifestations may include bowel or bladder dysfunction during menses, fatigue, and gastrointestinal symptoms mimicking irritable bowel syndrome. Diagnosis remains challenging: while clinical suspicion and transvaginal ultrasound—especially with expert “deep endometriosis” protocols—can identify many cases, definitive diagnosis still requires laparoscopic visualization and histopathologic confirmation.
Management is individualized and multidisciplinary, emphasizing symptom control, preservation of fertility, and prevention of disease progression. First-line pharmacologic options include combined hormonal contraceptives, progestin-only therapies, and gonadotropin-releasing hormone (GnRH) agonists or antagonists. Surgical intervention—typically laparoscopic excision—is indicated for severe pain unresponsive to medical therapy, large endometriomas, or suspected deep infiltrating disease. Emerging evidence supports long-term, cyclic treatment strategies rather than repeated short-term interventions, with growing attention to patient-centered outcomes, quality-of-life metrics, and shared decision-making throughout the care continuum.