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Endometriosis

Endometriosis Excision Surgery

Endometriosis excision surgery removes endometriosis lesions from their root to reduce pain, inflammation, and organ irritation—often with better long-term relief than “burning” lesions, which is known as ablation. It’s considered the gold standard surgical approach for many people with endometriosis.

A flat vector illustration of a robotically assisted endometriosis excision surgery

Overview

Endometriosis excision surgery is a minimally invasive procedure that aims to remove endometriosis (endometrial-like tissue growing outside the uterus) rather than simply cauterizing the surface and hoping that the damage is deep enough to eradicate the endo lesions. The latter is called ablation. By removing disease more completely, down to healthy tissue below the lesions, excision surgery may offer more durable relief of symptoms like pelvic pain, painful periods, pain during intercourse, and certain bowel/bladder symptoms.


Absolute proof for excision in all situations has been elusive. For superficial endometriosis, both ablation and excision can improve pain in the short term. The challenge there is mainly whether or not the surgeon can correctly identify endo lesions, assess risk to nearby delicate structures like the ureters, and is able to determine that the disease is not actually deeper than they thought. This last part is hard to do when looking at the surface in all but minimal endo cases. However, for endometriomas and deeper disease, excision has stronger evidence for improved pain outcomes and reduced persistence/recurrence risk, and it allows tissue confirmation. Pathologic confirmation of endo supports accurate staging and leads to treatment decisions down the line that are not based on guessing what the diagnosis is.


Endometriosis can look and behave differently from person to person—superficial lesions, deep lesions, atypical looking lesions, scar tissue/adhesions, ovarian cysts (endometriomas), or even deeper disease affecting pelvic nerves, bladder, bowel, ureters, or diaphragm. Excision is designed to address endometriosis comprehensively and thoughtfully, while preserving healthy organs whenever possible. So it is not just a matter of excision vs ablation. It is a matter of surgeon experience in determining what, why, when and where to do what. Learn more about the condition itself here: endometriosis.


At Lotus Endometriosis Institute, excision surgery is part of a larger care plan that may include advanced diagnostic evaluation, pain-focused support, and integrative recovery tools. We generally go beyond routine evaluation to ensure the treatment plan is as well grounded as possible. You can explore our services and surgery and advanced excision to see how care is coordinated.

When Is It Recommended?

Excision surgery is commonly recommended when symptoms are persistent, worsening, or life-limiting despite medical therapy—especially when you’ve tried options like anti-inflammatory strategies, hormonal suppression, or targeted hormonal therapy but still have significant pain, fatigue, or functional limitations. It may also be considered when imaging or exam suggests endometriomas, deep disease, or adhesions that are unlikely to improve with medication alone.


It’s also an option when endometriosis is suspected but you’re stuck in the “maybe/unclear” stage—especially if your symptoms are cyclical and classic (for example: severe painful bowel movements, bladder pain, or urinary urgency that flares with your cycle). A specialist evaluation can help determine whether surgery is likely to be helpful, and what else should be considered. Start with evaluation and diagnosis.


For people trying to conceive, excision may be recommended to improve pelvic anatomy and reduce inflammatory burden—particularly if endometriosis is suspected to be contributing to infertility. Because fertility goals change surgical planning, it’s important to discuss your timeline and priorities early in the consultation.

What to Expect

The goal of excision surgery is to reduce pain drivers and improve quality of life—often by decreasing inflammation, releasing organs that are “tethered” by adhesions, and removing endometriosis lesions that irritate sensitive tissues. Many patients report meaningful improvement in period pain, daily pelvic pain, bowel/bladder flares, and pain with intimacy, although results vary based on disease location, coexisting conditions, and how long pain has been present.


It’s equally important to know what excision surgery doesn’t do: it doesn’t guarantee complete or permanent symptom elimination, and it may not address every contributor to pain (for example, pelvic floor muscle spasm, nerve sensitization, IBS-like symptoms, bladder pain syndrome, or adenomyosis). Lotus integrates supportive care such as pain management, integrative medicine and lifestyle care, and pelvic floor therapy to help your nervous system and muscles recover and to cover other possible related or unrelated pain generators. Endo causes a lot of problems but it usually does not directly cause all of them.


During your planning visit, you can expect a detailed conversation about your symptoms, goals (pain relief, fertility, avoiding hysterectomy, etc.), prior treatments, and what organs might be involved. If symptoms suggest overlapping conditions, your team may also discuss related diagnoses—such as adenomyosis or other issues listed under related conditions.

About the Surgery

Endometriosis excision surgery is typically performed using minimally invasive laparoscopy (with advanced robotic assistance in most cases at Lotus). Through small incisions, the surgeon carefully identifies endometriosis lesions and removes them with an excision technique—aiming to eliminate disease while protecting healthy tissue and organ function.


Because endometriosis can hide in complex areas (around the bowel, bladder, ureters, pelvic nerves, or diaphragm), the “scope” of surgery depends on what is found and what you and your surgeon agreed to in advance. Some patients also need treatment of associated problems during the same operation—such as removal of ovarian cysts/endometriomas, release of adhesions, or evaluation/treatment of suspected deep disease. (Those may align with procedures like Excision of Endometriomas, Pelvic Adhesiolysis, Bladder Surgery for Endometriosis, or Bowel Surgery for Endometriosis, depending on your case.)


At Lotus, surgery is approached as one part of a long-term plan: remove disease thoughtfully, confirm diagnoses when possible, look for other pain generators, and create a recovery strategy that supports healing and reduces the chance that symptoms persist due to untreated overlap issues. Learn more about the surgical approach here: surgery and advanced excision.

Recovery Expectations

Most patients go home the same day or after a short stay, depending on surgical complexity and individual needs. In the first several days, it’s common to have abdominal soreness, fatigue, bloating, and shoulder/upper back discomfort related to laparoscopy. Many people can do gentle walking right away, but you’ll want to plan for help with childcare, lifting, and household tasks early on.


A typical recovery involves gradual improvement over 2–6 weeks, but it’s not unusual for full “settling” of pelvic inflammation and nerve irritation to take longer—especially after complex excision or long-standing pain. Your team will give guidance on activity, incision care, bowel support, and when to resume sex, exercise, work, and travel. If pelvic floor tightness is part of your symptoms, pelvic floor therapy may be recommended after surgery to support lasting relief.


If you have ongoing symptoms after surgery, it does not automatically mean the surgery “failed.” It may mean you need targeted treatment for adenomyosis, pelvic floor dysfunction, bladder/bowel overlap conditions, or central sensitization. That’s why coordinated follow-up and a personalized plan through our services matters.

Why Expertise Matters

Excision surgery is highly skill-dependent. Endometriosis lesions can be subtle, hidden, or located near structures where precision is critical (ureters, bladder, bowel, pelvic nerves, diaphragm). A surgeon with advanced excision training is more likely to recognize the full pattern of disease, remove it thoroughly when safe, and avoid incomplete treatment that can leave behind active lesions or unresolved adhesions.


Expertise also matters for protecting fertility and organ function. Decisions like how to manage ovarian endometriomas, how to handle deep disease, and when to involve additional surgical support can affect outcomes—pain relief, recurrence risk, and complication risk. This is why many patients seek a specialist center focused on endometriosis rather than general gynecologic laparoscopy.


Lotus Endometriosis Institute is led by Dr. Steven Vasilev, known for being an early adopter and published leader in surgical complex-case care, including advanced excision surgery before the term MIGS was even coined. If you’re considering surgery—or you’ve had prior surgery and still have symptoms—you can schedule a consultation to review options and build a plan that matches your goals.

Patients Often Ask

How rare is endosalpingiosis?

Endosalpingiosis is generally considered uncommon, but “how rare” it is depends heavily on who’s being studied and how it’s found. Many cases are discovered incidentally on pathology—meaning tissue is identified under the microscope after surgery done for other reasons—so it’s likely underrecognized in the general population. In other settings (like surgical cohorts), it may appear more often simply because more tissue is being sampled and examined carefully.


What matters most for patients is that endosalpingiosis can be confused with endometriosis on imaging or even at surgery, yet it doesn’t always behave the same way clinically. If you’ve been told you have endosalpingiosis and you also have pelvic pain, bowel/bladder symptoms, or fertility concerns, our team can help interpret what that finding means in the context of your symptoms and operative/pathology reports. You’re welcome to explore our educational content on related endometriosis and uterine conditions, and reach out to schedule a consultation if you want a personalized plan.

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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.

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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.

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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.

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Can endometriosis cause arthritis-like joint pain?

Yes—endometriosis can be associated with arthritis-like joint pain in some people, even though joint pain isn’t considered a classic “core” symptom. Endometriosis can drive chronic inflammation and immune dysregulation, and that whole-body inflammatory state may show up as aching, stiffness, or flares that feel similar to inflammatory arthritis. Some patients also notice joint symptoms that cycle with their period or worsen during broader endometriosis flares.


At the same time, endometriosis doesn’t “equal” autoimmune arthritis, and an association doesn’t prove that one causes the other. Research suggests higher rates of certain autoimmune conditions in people with endometriosis—including inflammatory diseases that can affect joints—so persistent joint pain deserves a full-picture evaluation rather than being automatically attributed to pelvic disease alone. If you’re dealing with pelvic pain plus joint symptoms, our team can help you sort out what fits endometriosis, what may be a related immune condition, and how that affects your treatment plan, including whether excision surgery and coordinated integrative support make sense for you.

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How does estrogen affect the endometrium?

Estrogen is one of the main hormones that drives endometrial growth. In the first half of the menstrual cycle, rising estrogen signals the endometrium to thicken and rebuild after a period, preparing the uterus for a possible pregnancy. It also influences the local immune and inflammatory environment in the uterus, which is part of why hormonal shifts can change bleeding patterns and pain.


When estrogen’s growth signals are strong—and progesterone’s “calming” effect is weaker than expected (often described as progesterone resistance)—the endometrium can behave in a more persistently inflamed, reactive way. This hormone–inflammation pattern is especially relevant in estrogen-dependent conditions like adenomyosis and endometriosis, where tissue similar to the endometrium can contribute to ongoing symptoms. If you’re trying to make sense of heavy bleeding, severe cramping, or cycle-linked pelvic pain, our team can help you connect the hormonal biology to what you’re feeling and review next steps for diagnosis and treatment.

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What does a frozen uterus mean with endometriosis?

A “frozen uterus” 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.


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.

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What are peritoneal pockets in endometriosis?

Peritoneal pockets are small “indentations” or fold-like defects in the peritoneum—the thin lining that covers the pelvic organs and inner abdominal wall. In endometriosis surgery, we may see these pockets as tucked-in areas or little pits in the peritoneal surface, and they can be associated with superficial peritoneal endometriosis or early/developing disease patterns.


These pockets matter because endometriosis doesn’t always look like obvious black or red implants; it can hide within subtle anatomic changes, scarring, or altered peritoneal contours. In the operating room, careful inspection and technique are important so that disease within or around a peritoneal pocket isn’t missed or only treated on the surface. If you’ve been told you have “peritoneal pockets,” our team can help you understand what that finding may mean in your case—based on your symptoms, imaging, and whether deeper structures (like bowel, bladder, or ureters) could also be involved.

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Related Procedures

You may also want to learn about these related procedures:

Considering Endometriosis Excision Surgery?

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Dr. Steven Vasilev delivers best-in-class endometriosis guidance and a personalized treatment plan—built on evidence and your unique biology.


Led by Steven Vasilev, MD—an internationally recognized endometriosis specialist & MIGS surgeon—Lotus Endometriosis Institute is virtual-forward, with many patients traveling nationally for care. Clinical evaluation and surgical treatment are provided in California.

Santa Monica, CA

2121 Santa Monica Blvd, Santa Monica, CA 90404

Operating Hours

8:00 am - 5:00 pm
Monday - Friday

Arroyo Grande, CA

154 Traffic Way, Arroyo Grande, CA 93420