Deep Infiltrating Endometriosis

Deep infiltrating endometriosis (DIE) occurs when endometriosis grows more than 5 mm beneath the peritoneum, forming firm nodules and scar tissue that can tether organs. It most often affects the uterosacral ligaments, rectovaginal septum, bowel, bladder, and ureters, and may irritate nearby nerves. Symptoms frequently include severe period and pelvic pain, deep pain with sex or bowel movements, urinary urgency or bleeding with menses, and neuropathic pain patterns.

Care centers on precise mapping and coordinated treatment. Expert transvaginal or transrectal ultrasound and pelvic MRI can identify depth and organ involvement, guiding decisions on medicines, pelvic floor therapy, and when to consider advanced excision. Hormonal therapies can reduce inflammation and bleeding, but fibrosis and organ distortion may persist, so surgery by teams experienced in colorectal and urologic involvement is sometimes recommended. Fertility planning is individualized; some benefit from anatomy‑restoring excision while others proceed directly to IVF based on age and goals. For organ‑specific information see Bowel Endometriosis and Bladder Endometriosis, imaging guidance in Ultrasound and MRI, surgical planning in Imaging for Surgery and Excision Surgery, and nerve‑focused care in Nerve Pain.