Pelvic Venous Disease

Pelvic Congestion Syndrome

An underdiagnosed cause of chronic pelvic pain is caused by venous reflux, congestion, and compression in the pelvic veins.

Caused by impaired blood flow in the pelvic veins, this condition can lead to persistent pain and pressure that is often overlooked in routine evaluations. At ESSI, we identify complex vascular contributors to pelvic pain.

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What is Pelvic Venous Disease (Pelvic Congestion Syndrome)?

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pelvic congestion and back toward a life of comfort and confidence.

Pelvic Congestion Syndrome, more accurately termed Pelvic Venous Disease (PVD), is a chronic and frequently underdiagnosed cause of pelvic pain. Similar to how varicose veins develop in the legs, this condition occurs when the valves within the pelvic veins (such as the ovarian veins) become weakened or damaged.

Normally, these valves ensure blood flows efficiently back to the heart against gravity. When they fail, blood flows backward (reflux) and pools in the pelvis, causing the veins to bulge and become congested. This increased pressure leads to chronic inflammation and pain affecting the uterus, ovaries, and vulva.

While it is estimated that up to 15% of women between the ages of 20 and 50 have varicose veins in the pelvis, not all experience symptoms. However, for those who do, the pain can be debilitating. PVD also encompasses compressive disorders such as May-Thurner Syndrome (Iliac Vein Compression) and Nutcracker Syndrome, where the major veins in the pelvis are compressed by arteries or the spine, obstructing blood flow.

We are entering a new era where we don’t just manage chronic symptoms. We resolve the underlying causes.

Core Services

The Most Common Symptoms

Patients with Pelvic Venous Disease often endure years of discomfort and multiple specialist visits before receiving a diagnosis. The symptoms are distinct from other gynecological conditions and are often linked to position and gravity.

Chronic "Heaviness" and Dull Aching Pain

The hallmark of PVD is a dull, throbbing ache in the lower abdomen and pelvis that is described as a “heaviness.” Unlike the sharp cramps of endometriosis, this pain typically worsens throughout the day, especially after long periods of standing or sitting, as gravity causes more blood to pool in the varicose veins. Relief is often only found by lying down.

Post-Coital Pain and Dyspareunia

Pain during or after sexual intercourse is common. Because sexual activity increases blood flow to the pelvis, the already congested veins become further engorged, leading to prolonged aching or soreness that can last for hours or even days after intimacy.

Visible Varicose Veins and Leg Symptoms

Because the pelvic veins are connected to the lower extremities, many patients experience symptoms in their legs as well. This can include visible varicose veins on the vulva, buttocks, or upper thighs. Patients may also suffer from leg heaviness, swelling, or unresolved leg pain even after receiving treatment for superficial spider veins.

Associated "Full-Body" Symptoms

PVD is often seen in conjunction with other conditions. Patients may experience unexplained urinary urgency (feeling the need to urinate frequently), irritable bowel symptoms, migraines, or even a sense of physical anxiety in the chest (heart palpitations) unrelated to mental stress.

Our Treatment approach

Minimally Invasive Venous Intervention

Because Pelvic Congestion Syndrome is a vascular (vein) problem, it requires a vascular solution.

We prioritize accurate diagnosis using dedicated imaging (CT or MRI) to visualize the compression or reflux that traditional ultrasounds often miss. Our treatment philosophy is Minimally Invasive and focused on restoring normal blood flow. 

Venous Stenting (For May-Thurner Syndrome):
This is frequently the most effective treatment for Pelvic Venous Disease caused by compression. If imaging reveals May-Thurner Syndrome—where the left common iliac vein is pinched between the right iliac artery and the spine—a small metal (Nitinol) stent is placed inside the vein. This acts like a scaffold, widening the vein to relieve the obstruction and allowing blood to flow freely out of the pelvis, reducing pressure and pain.

Embolization (For Ovarian Vein Reflux):
For patients with Pelvic Congestion Syndrome caused by reflux (backward flow) in the ovarian veins, we utilize embolization. In this outpatient procedure, a thin catheter is guided into the faulty vein. Small coils or a specialized medication are placed to seal the vein shut. This blocks the backward flow and redirects blood into healthy veins that can properly return it to the heart, effectively “turning off” the source of the pressure.

STILL HAVE DOUBTS?

Expert Consultations

Request a consultation with an expert

interventional radiologist and venous specialist

Jiyong Ahn, MD

Interventional radiologist and venous specialist with more than 30 years of experience diagnosing and treating vein disease.

Dr. Ahn, MD, FACS, is a board-certified surgeon specializing in vein and pain management.

Dr. Ahns’s specialty area

He specializes in the treatment of varicose and spider veins, chronic venous insufficiency, leg swelling, venous ulcers, and related conditions using advanced, minimally invasive techniques, including ultrasound-guided foam sclerotherapy and endovenous thermal ablation.

Dr. Ahn is board certified in Diagnostic Radiology and Vascular & Interventional Radiology and is a Diplomate of the American Board of Venous & Lymphatic Medicine.

Throughout his career, he has served on the faculty at Mount Sinai Medical Center and Albany Medical Center, as Chief Interventional Radiologist at White Plains Hospital, and as Head of Research & Development for Isaac Medical Device Company.

The Hidden Link Between Orthostatic Intolerance and Pelvic Pain

Is Your POTS Actually a Pelvic Venous Disorder?

For years, patients suffering from Postural Orthostatic Tachycardia Syndrome (POTS) have been told their condition is “incurable” or “all in their head.”

They navigate a frustrating maze of specialists, often balancing a dizzying array of symptoms ranging from heart palpitations to debilitating pelvic pain.

However, a groundbreaking study published in eClinical Medicine (2026) suggests we may have been looking at the wrong part of the body.

The research highlights a powerful association between POTS and Pelvic Venous Disorders (PeVD), specifically — also
known as May-Thurner Syndrome.

STILl HAVE DOUBTS?

Frequently Asked Questions

Is Pelvic Congestion Syndrome only caused by pregnancy?

No, although it is more common in women who have had multiple pregnancies (multiparous) due to the increased blood volume and physical changes during gestation. However, anatomical compressions like May-Thurner Syndrome or Nutcracker Syndrome can occur in women who have never been pregnant. These compressive issues are a major, often overlooked cause of pelvic pain in younger women.

Why was this missed on my regular pelvic ultrasound?

Routine pelvic ultrasounds are excellent for looking at organs like the uterus and ovaries, but they are often performed while you are lying down. When you are flat, the gravity-dependent pooling in the veins disappears, making the varicose veins collapse and become invisible. Furthermore, general radiologists are not always trained to look for venous compression. Diagnosis requires specialized knowledge and often advanced imaging like CT or MRI with specific vascular protocols.

What other conditions are linked to Pelvic Venous Disease?

It is common for patients with PVD to have co-existing inflammatory or connective tissue disorders. There is a higher prevalence of PVD in patients with Ehlers-Danlos Syndrome (EDS), POTS (Postural Orthostatic Tachycardia Syndrome), and Mast Cell Activation Syndrome (MCAS). Recognizing these connections is vital for a comprehensive treatment plan that addresses the whole patient, not just the pelvis.

The "Trifecta"

Endometriosis, POTS, and Pelvic Pain

In the world of complex chronic illness, we frequently see a “trifecta” of symptoms: Endometriosis, POTS, and Chronic Pelvic Pain. These conditions are often deeply intertwined. While Endometriosis involves tissue growing outside the uterus, it frequently coexists with pelvic venous congestion.

This study confirms that many patients with POTS and pelvic pain actually have significant venous outflow obstruction. When the iliac vein is compressed, blood pools in the pelvis and lower extremities, leading to a “preload failure”—meaning not enough blood returns to the heart.

Why Standard Imaging Often Misses the Mark

One of the most significant findings was the failure of standard screening tools to accurately identify the problem. If you’ve had a “normal” ultrasound but still feel terrible, you aren’t alone; these exams are highly operator-dependent.

Pelvic Ultrasound	53%	Misses nearly half of cases
CT Scan	50%	Lower detection accuracy
MRI/MRV	72%	Moderate diagnostic reliability
Venogram with IVUS	99%	The Gold Standard

THESE ARE THE MOST

Common Overlapping Symptoms

Orthostatic Intolerance (OI): Dizziness or fainting when standing.
Chronic Pelvic Pain: Heaviness or aching in the pelvis, reported by up to 96% of patients in clinical cohorts.
Gastrointestinal Issues: Bloating, diarrhea, or constipation.
Lower Extremity Pain: Swelling or "heavy legs," which surprisingly presented bilaterally in 55% of study participants.

A new hope

The Impact of Iliac Vein Stenting

|The most exciting part of this research is the treatment outcome. For patients with both POTS/OI and confirmed iliac vein compression, iliac vein stenting—a minimally invasive procedure to prop the vein open—showed dramatic results.

Key Results:

71% of patients met the response threshold for significant clinical improvement in POTS symptoms after 12 months.
44% of patients reached a score indicating remission of their orthostatic symptoms at the one-year mark.
Statistically significant reduction was seen across the board for pelvic pain, urinary urgency, and "brain fog".

By restoring proper blood flow to the heart, the body’s “fight or flight” response (tachycardia) finally has the opportunity to calm down.

Our Treatment approach

Pelvic Congestion and Infertility

The association with infertility is plausible but not definitive.

Pelvic congestion, or more broadly pelvic venous disease, may be relevant in selected infertility patients, especially when infertility coexists with chronic pelvic pain, dyspareunia, pelvic heaviness, or imaging evidence of periuterine or ovarian varices.

Venous reflux and pelvic venous hypertension may alter the pelvic environment and often overlap with other fertility-impacting conditions, particularly endometriosis. Some studies suggest a higher prevalence of ovarian varices in patients with endometriosis, and limited series have reported pregnancies after ovarian vein embolization in women diagnosed with pelvic congestion syndrome.

At ESSI, pelvic venous disease should be viewed as a potential contributing factor in unexplained infertility with pelvic pain or complex pelvic pathology, best assessed through a multidisciplinary approach.