Skip to main content
The Lotus Endometriosis Institute Logo

Deep Infiltrating Endometriosis

Related Posts

Guides to recognizing, diagnosing, and treating deep infiltrating endometriosis, including bowel, bladder, and nerve involvement. Covers medical therapy, imaging, advanced surgery, multidisciplinary care, and future directions.

Overview

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.

Common Questions

How is multi-organ endometriosis treated without organ removal?

In many multi-organ cases, the goal is conservative surgery: removing endometriosis while preserving the organs themselves. That typically means meticulous excision of disease from surfaces and deeper planes around the bowel, bladder, ureters, ovaries, and pelvic sidewalls—freeing organs from scar tissue and restoring normal anatomy without taking the organ out. Because endometriosis can hide in distorted or “frozen” anatomy, the safest way to preserve organs is often a highly precise approach that can dissect around vital structures.


In our practice, we use robotic excision to improve visualization and fine-control dissection, which is especially helpful when disease involves multiple compartments or has been operated on before. When endometriosis is close to structures like the ureters, bowel, diaphragm, or certain nerves, treatment planning may include coordinated work with other surgical specialists so the disease can be fully addressed in one operation while still prioritizing organ-sparing techniques.


Organ removal is usually considered only when an organ is severely damaged, there are multiple large endometriomas that can’t be safely managed with tissue-sparing techniques, fertility-safety concerns arise (like a badly damaged tube), or there’s concern for tumor or malignant change. If you’re trying to avoid organ removal, we can help map likely disease sites, clarify your priorities (pain relief, function, fertility), and outline what organ-preserving excision could realistically look like in your specific case—then build a surgical plan around that.

Read full answer

Why does ovarian cyst pain keep coming back?

Ovarian cyst pain can feel “recurrent” for a few different reasons. Some cysts are functional (they form with ovulation and then resolve), so the pain returns in a similar spot month after month even though it’s not the exact same cyst. In other cases, the cyst itself can come back or persist—especially if it’s an endometrioma (an ovarian cyst caused by endometriosis), which can behave differently than a simple cyst and may be associated with deeper pelvic disease.


Another common reason is that the cyst isn’t the whole story: endometriosis on the pelvic sidewall, uterosacral ligaments, bowel, bladder, or around the ovary can irritate the same nerves and tissues and make it feel like “my cyst is back” when the driver is actually inflammatory disease nearby. Adhesions (scar-like bands) can also tether the ovary and cause recurring pulling or sharp pain, even when imaging doesn’t show a large cyst. If your pain cycles, escalates, returns quickly after a “normal” ultrasound, or keeps recurring despite prior treatment, our team can help you map the pattern, interpret imaging with an endometriosis lens, and decide whether targeted evaluation and—when appropriate—excision surgery is the next best step.

Read full answer

What is deep infiltrating endometriosis (DIE) and how is it treated?

Deep infiltrating endometriosis (DIE) is endometriosis that grows deeper into tissue—often described as more than ~5 mm below the surface—and it commonly involves structures like the uterosacral ligaments, rectovaginal space, bowel, bladder, or ureters. Because it can inflame, scar, tether, or even narrow/obstruct nearby organs, DIE may show up as “non-gynecologic” symptoms such as bowel or urinary pain, painful sex, nerve-type pelvic pain, or symptoms that don’t match a routine pelvic exam.


Treatment depends on where the disease is and what it’s affecting, but DIE is the subtype most likely to require specialized surgical planning. When surgery is appropriate, meticulous excision (removing disease at its roots rather than burning the surface) is the gold-standard approach for durable symptom relief and for addressing organ involvement; in complex cases this can include careful work around the bowel, bladder, and ureters. Our team focuses on advanced, precision excision (often using robotic technology) with a tailored plan that prioritizes safety, completeness, and your goals—whether that’s pain relief, fertility, or protecting organ function.


Because DIE can be missed on basic exams and even “normal” imaging, evaluation often requires a higher index of suspicion and the right strategy for mapping disease before any procedure. If DIE sounds like it could explain your symptoms, explore our detailed resources on deep disease and excision, or reach out to schedule a consultation so we can review your history, imaging, and next steps together.

Read full answer

Why are bowel movements painful and bloating worse during my period?

Painful bowel movements and bloating that flare during your cycle are common in endometriosis—especially when disease is deep in the pelvis near the rectum/rectosigmoid, or when inflammation and scarring tether the bowel to nearby structures. Even without endometriosis growing “inside” the bowel, pelvic lesions can irritate surrounding tissue and nerves, creating cramping, pressure, and the deep, sharp pain some people feel with passing stool. Hormonal cycling can amplify inflammation and swelling, which is why symptoms often peak around bleeding and then ease. Many patients also notice alternating constipation/diarrhea or an “endo belly” pattern that tracks with their period.


These symptoms are often confusing because standard GI workups (including colonoscopy) can be normal—bowel endometriosis frequently affects the outside of the bowel wall or deeper layers rather than the inner lining that a colonoscopy evaluates. What matters most is mapping where symptoms point anatomically and whether there are red flags like cyclical rectal bleeding, escalating severity, or signs of narrowing/obstruction. Our team focuses on a whole-pelvis evaluation and, when appropriate, targeted imaging and surgical planning to confirm what’s driving your bowel pain and bloating and treat it effectively. If you’d like, you can reach out to schedule a consultation so we can review your symptom pattern and discuss next steps.

Read full answer

Can endometriosis cause a painful bump near the anus?

Yes. Endometriosis can contribute to pain and pressure around the rectum and anal area, especially when disease involves the rectum/rectosigmoid region or nearby tissues. Many patients describe deep pain with bowel movements, rectal pressure, or symptoms that flare around their cycle, and those patterns can fit bowel or deep infiltrating endometriosis.


That said, a sensitive bump on the anus itself is more often something else (like a hemorrhoid, fissure, skin infection/abscess, or another localized anal/skin condition). In some cases, pelvic disease can coexist with these issues, which is why we don’t assume every finding is endometriosis—or dismiss it as “nothing.”


If you’re noticing a new, persistent, or worsening bump—especially if it’s very tender, draining, bleeding, or associated with fever—we want to evaluate the full picture. Our team can sort out whether your symptoms point toward bowel endometriosis, a separate anorectal condition, or both, and plan next steps such as a focused exam and, when appropriate, expertly interpreted imaging to map possible deep disease.

Read full answer

What is the AAGL endometriosis classification system?

The AAGL endometriosis classification system is a standardized way surgeons describe what they found at surgery—where endometriosis is located, how extensive it is, and how complex the disease appears. Its goal is to create a more consistent “shared language” than older staging alone, especially for cases where symptoms and imaging don’t tell the full story.


Unlike simple stage labels, AAGL-style classification is meant to better capture real-world surgical complexity, including deeper disease that can involve structures like the uterosacral ligaments, rectovaginal space, bowel, bladder, or ureters. This matters because location and depth (for example, deep infiltrating disease) can drive very different symptoms and may change imaging choices and surgical planning. If you’re reading an operative report or trying to make sense of what a surgeon told you, our team can help translate the classification into what it likely means for your body, your symptoms, and the treatment path you’re considering.

Read full answer

What is pelvic dissection in endometriosis surgery?

Pelvic dissection in endometriosis surgery means carefully separating and opening tissue planes in the pelvis so we can clearly see normal anatomy and remove disease safely. Endometriosis can cause inflammation and scarring that “glues” organs together (sometimes called a frozen pelvis), so dissection is often the step where we free adhesions and restore normal relationships between the uterus, ovaries, bowel, bladder, and pelvic sidewalls.


In practical terms, pelvic dissection may include identifying and protecting critical structures like the ureters, bladder, bowel, blood vessels, and pelvic nerves before excising endometriosis at its roots. This is where surgical precision matters: the goal is to fully address disease while minimizing injury to healthy tissue, especially in complex or re-operative cases. If you’re seeing this term on an op note or surgical plan, it usually reflects the complexity of the anatomy and the deliberate work needed to make excision both complete and safe—our team can walk you through exactly what was dissected and why in your specific case.

Read full answer

What does a frozen pelvis mean with endometriosis?

A “frozen pelvis” isn’t a separate diagnosis—it’s a descriptive term surgeons use when the uterus is essentially stuck in place because endometriosis-related inflammation has caused dense scarring (adhesions). Instead of the uterus moving freely, it may be tethered to nearby structures like the bowel, bladder, ovaries, or pelvic sidewall, sometimes pulling the uterus into an abnormal position and making pelvic anatomy hard to distinguish. Thus some have also called it a "frozen uterus".


This finding often suggests more advanced disease, such as deep infiltrating endometriosis and/or significant adhesions from prior inflammation or surgery, and it can help explain symptoms like deep pelvic pain, painful sex, bowel or bladder symptoms, or pain that doesn’t match what a routine exam shows. In these cases, surgery is less about “burning spots” and more about carefully restoring normal anatomy—freeing organs, protecting ureters and bowel, and removing endometriosis at its roots. If you’ve been told your uterus is “frozen,” our team can help you understand what that implies for imaging, surgical planning, and which adjacent organs may need to be evaluated as part of a complete excision strategy.

Read full answer

Reach Out

Have a question?

Lotus Endometriosis Institute provides California-based surgical evaluation and advanced excision care for patients with suspected endometriosis, adenomyosis, complex pelvic pain, and related conditions.


Many patients contact us from outside California to learn whether traveling for in-person evaluation and possible surgery may be appropriate.

Call Us

(424) 255-1340

(805) 920-0909

Fax: (805) 935-4338

Santa Monica, CA

2121 Santa Monica Blvd, Santa Monica, CA 90404

Operating Hours

8am - 5pm
Monday - Friday

Arroyo Grande, CA

154 Traffic Way, Arroyo Grande, CA 93420