Reviewed by Dr. Amir Issa, MD, DABVLM, RPhS · CURA Vein Doctors · October 2026
Chronic pelvic pain affects up to 15% of women of reproductive age. For many, the cause goes undiagnosed for years, with investigations pointing to everything except the veins. Yet pelvic congestion syndrome (PCS) is behind an estimated 30% of chronic pelvic pain cases, making it one of the most consistently overlooked vascular conditions in women’s health.
Could the source of unexplained pelvic pain be a problem in the veins that nobody has thought to look for?
Are Pelvic Varicose Veins Dangerous?
Short Answer
Pelvic varicose veins are not immediately life-threatening, but they are not harmless. Left untreated, they can cause progressive chronic pain, sexual dysfunction, and significant physical disability. In some cases, pelvic varicose veins are associated with pelvic deep vein thrombosis, which requires urgent evaluation. Treatment is available and highly effective.
Pelvic varicose veins differ from leg varicose veins in one critical way: they are internal and invisible. A standard physical exam will not detect them, and symptoms are frequently attributed to gynecological causes, delaying the correct diagnosis by months or even years.
Seek immediate care if you develop sudden severe pelvic pain, one-sided leg swelling with warmth or redness, or unexplained shortness of breath. These may signal deep vein thrombosis or pulmonary embolism rather than PCS alone.
What Is Pelvic Congestion Syndrome?
PCS is a chronic pain disorder caused by dilated, dysfunctional veins in the pelvis. Just as varicose veins in the legs develop when valve failure allows blood to pool under pressure, the same process occurs in the ovarian and internal iliac veins. Pooled blood stretches the vein walls and activates pain receptors in the surrounding pelvic tissue.
PCS affects women almost exclusively, most commonly between the ages of 20 and 45. It is significantly more prevalent in women who have had two or more pregnancies: each pregnancy increases pelvic blood volume and may permanently enlarge the ovarian veins.1 PCS is a form of venous insufficiency that responds well to specialist treatment.
Pelvic Venous Insufficiency and PCS: What’s the Connection?
Pelvic venous insufficiency (PVI) is the broader term for venous valve failure in the pelvic veins. PCS is the clinical syndrome that results when PVI produces chronic pain. Not all PVI leads to PCS, and not all chronic pelvic pain is caused by PVI, but the two are closely linked and often occur together.
Ovarian vein reflux is the most common underlying mechanism. The ovarian veins drain the uterus and ovaries into the renal vein on the left and the inferior vena cava on the right. When their valves fail, blood refluxes back into the pelvis. A vein diameter of 5 mm or more with demonstrable reflux on standing or Valsalva is the standard diagnostic threshold used in specialist imaging.
May-Thurner Syndrome, in which the left iliac artery compresses the left iliac vein, is a related but distinct condition. It can coexist with PCS and must be identified separately, because its treatment (iliac vein stenting) differs entirely from ovarian vein embolization. Accurate diagnosis requires specialist-level pelvic venous imaging. The pelvic venous congestion program at CURA includes the full diagnostic and interventional pathway for both conditions.
Risk Factors for Pelvic Congestion Syndrome
Multiple pregnancies carry the highest individual risk. Estrogen promotes venous wall relaxation, which explains why PCS symptoms often worsen premenstrually and typically improve after menopause. Other established risk factors include:
- Polycystic ovary syndrome (PCOS)
- Retroversion of the uterus
- Family history of varicose veins
- Tall stature, which is associated with longer ovarian veins and greater hydrostatic pressure
Symptoms of Pelvic Congestion Syndrome
The positional pattern is one of the most useful clinical clues. PCS characteristically worsens with prolonged standing and improves when lying down. Pain that follows this pattern, and that has been attributed to endometriosis, ovarian cysts, or IBS without resolution, warrants a pelvic vein evaluation.
How Is Pelvic Venous Disease Diagnosed?
PCS is missed in most standard workups because the necessary imaging is not routine. A pelvic ultrasound performed in a supine, resting patient may appear entirely normal, missing reflux that only becomes visible on standing or Valsalva. A full diagnostic pathway typically involves several imaging steps.
| Imaging Method | What It Shows | When Used | Key Limitation |
|---|---|---|---|
| Pelvic Doppler Ultrasound | Ovarian vein diameter and direction of blood flow | First-line; must be performed standing or with Valsalva maneuver | Operator dependent; misses reflux if patient is supine and still |
| MRI Venography | 3D vein mapping and surrounding soft tissue detail | Second-line or when ultrasound is inconclusive | Longer scan time; cannot assess dynamic reflux in real time |
| CT Venography | Rapid vascular anatomy including collateral vessels | Pre-procedure planning; assessment for May-Thurner anatomy | Radiation and intravenous contrast required |
| Catheter Venography | Gold standard: live imaging of reflux under fluoroscopy | Performed at the same session as embolization treatment | Invasive; not used as a stand-alone diagnostic test |
For most patients, pelvic Doppler ultrasound followed by MRI venography is sufficient to confirm the diagnosis and plan the appropriate intervention. Catheter venography and embolization are then completed together in a single procedure session.2
Treatment Options for Pelvic Venous Disease
Treatment is selected based on symptom severity, imaging findings, and the patient’s reproductive plans. Options range from compression stockings and conservative symptom management to minimally invasive procedures that correct the underlying reflux at its source.
How Treatment Typically Escalates
Conservative
Compression, NSAIDs, activity adjustments
Hormonal Therapy
Progestins to reduce ovarian vein dilation
Embolization
Minimally invasive closure of refluxing ovarian veins
Surgical
Ligation reserved for refractory cases only
| Treatment | Approach | How It Works | Recovery |
|---|---|---|---|
| Conservative Measures | Non-invasive | Compression, NSAIDs, posture and activity changes | Ongoing management |
| Hormonal Therapy | Medical | Progestins suppress ovarian activity, reducing vein dilation and pelvic engorgement | Weeks to months |
| Ovarian Vein Embolization | Interventional | Coils or foam close the refluxing vein segment at its source under fluoroscopic guidance | 1 to 2 weeks |
| Pelvic Sclerotherapy | Interventional | Chemical closure of residual pelvic and vulvar varicose veins after embolization | 1 to 2 weeks |
| Surgical Ligation | Surgical | Ties off the incompetent ovarian vein; used only when embolization has failed | 4 to 6 weeks |
Ovarian vein embolization is the most established interventional option, with long-term success rates of 70 to 85% reported in published outcomes data.3 The procedure is performed under local anaesthesia with sedation, takes approximately 45 to 60 minutes, and requires no overnight hospital stay.
Frequently Asked Questions
How do you cure pelvic congestion syndrome?
There is no single cure, but ovarian vein embolization produces long-term symptom relief in 70 to 85% of patients. Conservative options such as compression and NSAIDs manage symptoms without correcting the underlying reflux. Hormonal therapy can reduce pain significantly but is not a permanent solution for most women.
What can be mistaken for pelvic congestion?
Endometriosis, interstitial cystitis, irritable bowel syndrome, ovarian cysts, pelvic floor dysfunction, and vulvodynia all share overlapping symptoms with PCS. Because standard pelvic exams and laparoscopy do not visualize the pelvic veins, PCS is frequently misdiagnosed or dismissed as unexplained chronic pelvic pain.
What are all the symptoms of pelvic congestion syndrome?
Symptoms include chronic dull or aching pelvic pain lasting more than six months, pain that worsens with standing and eases when lying down, painful intercourse, visible varicose veins on the vulva or inner thighs, urinary urgency, and premenstrual symptom flares. Not every patient experiences all symptoms.
Chronic pelvic pain has a treatable vascular cause in many cases
CURA Vein Doctors specializes in diagnosing and treating pelvic congestion syndrome using minimally invasive, image-guided techniques. Get a specialist evaluation today.
References
- Beard RW, Reginald PW, Wadsworth J. Clinical features of women with chronic lower abdominal pain and pelvic congestion. Br J Obstet Gynaecol. 1988;95(2):153-161.
- Ganeshan A, et al. Chronic pelvic pain due to pelvic congestion syndrome: the role of diagnostic and interventional radiology. Cardiovasc Intervent Radiol. 2007;30(6):1105-1111.
- Kim HS, et al. Embolotherapy for pelvic congestion syndrome: long-term results. J Vasc Interv Radiol. 2006;17(2):289-297.
