What is Pelvic Congestion Syndrome?
Pelvic Congestion Syndrome (PCS) occurs when the veins in the pelvis become enlarged and dysfunctional, similar to varicose veins that develop in the legs. These ovarian and pelvic veins — called pelvic varices — fail to drain blood efficiently, causing blood to pool and increasing pressure within the pelvic region.
The condition is most commonly seen in women of reproductive age, particularly those who have had one or more pregnancies. During pregnancy, increased blood flow to the pelvis and hormonal changes can cause pelvic veins to dilate. In some women, these veins do not return to their normal function, leading to chronic venous insufficiency within the pelvis.
Pelvic Congestion Syndrome is a frequently underdiagnosed cause of chronic pelvic pain, as its symptoms can mimic many other conditions. At Vascular Surgical Associates, our experienced vascular team is skilled at identifying PCS through advanced imaging and providing targeted, minimally invasive treatments that address the root cause of the problem.
Signs & Symptoms
The hallmark of Pelvic Congestion Syndrome is a dull, aching pelvic pain that lasts six months or longer. Symptoms are often worse during or after prolonged standing, at the end of the day, or around menstruation, and may ease when lying down.
Chronic Pelvic Pain
A persistent, dull, or aching pain deep in the lower abdomen and pelvis, often described as a heaviness or pressure that worsens with activity and improves with rest.
Pain After Prolonged Standing
Discomfort that noticeably increases after long periods of standing or sitting, as gravity causes blood to pool further in the dilated pelvic veins.
Dyspareunia
Pain during or after sexual intercourse, which can persist for hours or days afterward and significantly impact quality of life and intimate relationships.
Varicose Veins of the Vulva or Thighs
Visible varicose veins appearing on the vulva, buttocks, inner thighs, or upper legs, which may develop as a result of abnormal blood flow from pelvic varices.
Worsening Around Menstruation
Symptoms that flare in the days leading up to and during a menstrual period, often accompanied by increased pelvic heaviness and irritable bladder symptoms.
Urinary Urgency
An increased need to urinate frequently or urgently, caused by pressure from engorged pelvic veins pressing on the bladder and surrounding structures.
Risk Factors
Multiple Pregnancies
Women who have had two or more pregnancies face a substantially elevated risk, as repeated hormonal changes and increased pelvic blood flow progressively weaken venous walls.
Hormonal Influence
Estrogen is known to relax venous walls, making premenopausal women particularly susceptible. Hormonal contraceptives and hormone therapy may also play a role.
Polycystic Ovary Syndrome
Women with PCOS have enlarged ovaries that may compress nearby pelvic veins, interfering with normal drainage and contributing to pelvic varicosity.
Anatomical Variations
Conditions such as a retroverted uterus or May-Thurner syndrome — where a pelvic artery compresses a nearby vein — can impair blood return from the pelvis.
Family History
A genetic predisposition to vein wall weakness or venous insufficiency may increase the likelihood of developing pelvic varices and associated symptoms.
Occupations Requiring Prolonged Standing
Jobs that require extended periods of standing or heavy lifting increase gravitational pressure on pelvic veins, accelerating dilation and dysfunction over time.
Diagnosis at VSA
At Vascular Surgical Associates, we use our IAC-accredited vascular laboratory to provide precise, reliable diagnostic imaging for Pelvic Congestion Syndrome. Because PCS symptoms overlap with many gynecological and musculoskeletal conditions, accurate diagnosis depends on specialized vascular expertise and targeted imaging studies.
The most effective initial imaging tool is a duplex ultrasound of the pelvis, which allows our specialists to evaluate blood flow in the ovarian and pelvic veins and identify reversal of flow — a hallmark sign of venous insufficiency. This non-invasive study can detect dilated veins greater than 6 mm in diameter and assess the degree of reflux throughout the pelvic venous system.
When further evaluation is needed, CT angiography (CTA) or MR venography (MRV) provides detailed, three-dimensional images of the pelvic vasculature, enabling precise mapping of affected veins and identification of any anatomical contributors such as May-Thurner syndrome or nutcracker syndrome. In some cases, pelvic venography — a minimally invasive catheter-based study — is performed to both confirm the diagnosis and simultaneously treat the condition. All diagnostic studies are interpreted by our experienced vascular specialists to ensure an accurate diagnosis and a personalized treatment plan.
Treatment Options
Treatment for Pelvic Congestion Syndrome is tailored to the severity of symptoms, the extent of venous involvement, and your overall health. Our vascular surgeons develop individualized treatment plans using the latest evidence-based guidelines and minimally invasive techniques.
Ovarian Vein Embolization
Ovarian Vein Embolization (OVE) is the primary and most effective minimally invasive treatment for PCS. Performed through a small puncture in the neck or groin vein, a catheter is guided under imaging to the affected ovarian and pelvic veins. Embolic coils or sclerosant agents are then deployed to block abnormal blood flow and eliminate the varices at their source. The procedure is performed on an outpatient basis, requires no general anesthesia, and allows most patients to return to normal activities within a few days. Studies show that OVE significantly reduces or eliminates chronic pelvic pain in the majority of patients.
Sclerotherapy
For varicose veins visible at the vulva, inner thighs, or buttocks caused by pelvic varices, sclerotherapy can be performed in combination with embolization. A specialized sclerosant solution is injected directly into the abnormal surface veins, causing them to close and gradually fade. This targeted approach addresses both the underlying pelvic source and the visible manifestation of venous disease for a more complete and lasting result.
Medication Management
For patients who are not yet ready for a procedural intervention or who have mild symptoms, medication can help manage pelvic pain and slow progression. Medroxyprogesterone acetate and other hormonal therapies reduce ovarian vein blood flow and have been shown to decrease symptom severity. Non-steroidal anti-inflammatory drugs (NSAIDs) may also be used for symptomatic pain relief. Medications are typically used as a bridge to definitive treatment rather than a long-term solution.
Surveillance & Monitoring
For patients with mild venous dilation and manageable symptoms, ongoing surveillance with periodic duplex ultrasound allows our vascular team to monitor disease progression and intervene at the optimal moment. Lifestyle modifications — including compression garments for the lower body, regular low-impact exercise, and weight management — can support venous health and reduce symptom burden between evaluations.
Frequently Asked Questions
PCS is caused by the same underlying mechanism as varicose veins — venous reflux and wall weakness — but occurs within the internal pelvic veins rather than on the surface of the legs. Pelvic varices can, however, cause secondary varicose veins on the vulva, buttocks, and inner thighs, which are visible on the skin surface. Treating the internal pelvic source through embolization is essential to achieving lasting relief from both the internal and visible external veins.
Most patients notice a meaningful reduction in pelvic pain within two to four weeks of embolization, as the treated veins gradually close and blood is rerouted through healthy vessels. Full improvement often continues over the following three to six months as the body reabsorbs the treated varices. Clinical studies report significant or complete pain relief in 70–85% of patients following the procedure.
For patients who wish to preserve future fertility, our vascular surgeons take a careful approach and discuss all options in detail during consultation. Embolization targets the abnormal, refluxing ovarian veins and does not affect ovarian function or egg production. Many women have successfully conceived after treatment for PCS. Your individual anatomy and clinical situation will guide the treatment strategy.
While PCS, endometriosis, fibroids, and other conditions can all cause chronic pelvic pain, they have different origins and require different treatments. PCS is specifically a vascular condition caused by venous reflux, while endometriosis involves abnormal tissue growth driven by the menstrual cycle. Imaging studies — particularly venography and duplex ultrasound — are essential to distinguish PCS from other causes. In some cases, both conditions may be present simultaneously, which is why a thorough evaluation involving both vascular and gynecological specialists is important.
