What is Umbilical Endometriosis?
Umbilical endometriosis is a rare form of extra-pelvic disease where endometrial-like tissue implants and grows directly inside or on the umbilicus (the belly button). While endometriosis is typically found within the pelvic cavity, the umbilicus is one of the most common sites for the disease to appear externally.
Clinically, this condition presents in two ways. It can be “secondary,” meaning it developed in the scar tissue of a previous laparoscopic surgery. However, as Dr. Andrea Vidali frequently highlights, it can also be “primary.” Primary umbilical endometriosis occurs in patients who have never had prior abdominal surgery. This is a critical medical distinction because it actively dispels the outdated myth that endometriosis is solely caused by “retrograde menstruation” (period blood flowing backward). The presence of primary disease in the belly button proves that endometriosis can develop independently, far outside the pelvis.
Because it appears as a lump on the skin, umbilical endometriosis is highly complex to diagnose. Patients are routinely misdiagnosed with umbilical hernias, dermatological cysts, or skin infections. They are often bounced between general surgeons and dermatologists who do not recognize the cyclical, gynecological root cause of the nodule, delaying definitive care.
The most common symptoms
The symptoms of umbilical endometriosis are highly visual and tactile, making it a uniquely distressing form of the disease. The defining characteristic is its cyclical nature, directly mimicking the timing of the menstrual cycle.
Cyclical Bleeding from the Belly Button
The most alarming and distinct symptom is active bleeding from the umbilicus. Patients often notice a small, dark red, or purple “knob” or lesion protruding from the folds of their belly button. Because this tissue acts like the lining of the uterus, it swells and actively bleeds during the patient’s menstrual period. This cyclical bleeding is deeply distressing, highly uncomfortable, and is the clearest indicator that the lump is gynecological rather than a standard cyst or hernia.
A Painful, Swollen Umbilical Nodule
Patients typically develop a firm, palpable lump right at or just beneath the surface of the belly button. In the days leading up to menstruation, this nodule becomes engorged with trapped blood and inflammation. It becomes extremely tender to the touch—so much so that clothing, seatbelts, or simply bending over can cause sharp, localized pain. As the cycle ends, the swelling may decrease slightly, but the firm nodule typically remains, growing larger over time.
Localized Abdominal Throbbing and Discomfort
The inflammation caused by the bleeding nodule does not just stay on the surface. Patients often experience a deep, radiating ache or throbbing sensation that originates at the belly button and spreads across the center of the abdomen. This pain is mechanical and inflammatory, escalating significantly during the menstrual cycle and causing a constant sense of abdominal discomfort.
Our Surgical Philosophy and Treatment Approach
Gold-Standard Nerve-Sparing Excision Surgery
At Endometriosis Surgical Specialists International (ESSI), our approach to umbilical endometriosis is definitive and curative. We perform gold-standard complete nodule excision. We do not believe in merely draining the lump or treating it with topical medications, as the active disease will simply refill and return the following month.
Our surgical philosophy focuses on complete eradication of the disease while preserving cosmetic integrity. We meticulously dissect the entire endometriotic nodule away from the surrounding healthy abdominal wall, ensuring completely clean margins so no microscopic disease is left behind.
Because the umbilicus is a highly visible part of the body, our experts pair this deep excision with specialized reconstructive closure techniques. Our goal is to completely cure the painful, bleeding nodule while expertly reconstructing the umbilical ring, preserving the natural appearance of your belly button and restoring your quality of life.
Umbilical Endometriosis
Frequently Asked Questions
1. Does having umbilical endometriosis mean I also have severe pelvic endometriosis?
Not necessarily. While many patients with extra-pelvic endometriosis do have co-existing disease inside their pelvis, it is entirely possible to have isolated umbilical endometriosis. As Dr. Vidali has demonstrated in his surgical cases, patients can present with primary umbilical endometriosis while having a completely clear, disease-free pelvic cavity. However, to be absolutely certain, we recommend a comprehensive evaluation to ensure no hidden disease is overlooked.
2. I had a laparoscopy years ago. Did my surgeon cause this by pulling the disease through my belly button?
If your nodule developed directly inside the surgical scar from a prior laparoscopy, it is classified as "secondary" or "scar" endometriosis. This can occasionally happen when endometriotic tissue is extracted through the umbilical incision during surgery and microscopic cells implant in the healing tissue. However, if you have never had surgery, you have "primary" umbilical endometriosis, which develops independently and proves the disease is not simply a surgical transplant. Both types require the same expert excision to be permanently resolved.
3. Will my belly button have to be completely removed during surgery?
In the vast majority of cases, no. Our goal is always to perform an umbilicus-sparing excision. We meticulously isolate and remove the diseased nodule (the "knob" causing the bleeding and pain) while preserving the healthy surrounding skin and fascia. We then reconstruct the area to maintain your natural anatomy. Only in exceptionally rare, advanced cases where the disease has entirely destroyed the umbilical structure would a complete removal (umbilectomy) be required, which would be discussed extensively with you prior to surgery.