Pelvic Congestion Syndrome

What is Pelvic Congestion Syndrome?

Pelvic Congestion Syndrome (PCS) is a chronic condition caused by varicose veins in the pelvis — similar to the varicose veins that commonly develop in the legs. PCS is a significant but often underdiagnosed cause of chronic pelvic pain in women, accounting for approximately 13-14% of all chronic pelvic pain cases [1]. Research has shown that 1 in every 7 women, and 1 in 5 women who have had children, have varicose veins originating from the pelvis.

Chronic pelvic pain affects millions of women, and many spend years seeking a diagnosis. Because PCS symptoms overlap with other gynecological conditions, it is frequently misdiagnosed or overlooked. Understanding this condition is the first step toward finding effective relief.

How Does Pelvic Congestion Syndrome Develop?

The pelvis has three major vessels involved in venous drainage: the external iliac vein, internal iliac vein, and ovarian vein. Just like veins in the legs, pelvic veins contain one-way valves that keep blood flowing toward the heart. When these valves malfunction, blood flows backward and pools in the pelvic veins.

As blood accumulates, the veins become dilated, stretched, and engorged — essentially becoming varicose veins within the pelvis. These enlarged veins can surround the ovaries and exert pressure on the bladder and rectum, causing a range of painful symptoms. In some cases, the varicose veins extend down into the upper thighs and vulvar area, becoming visible on the skin surface.

Symptoms of Pelvic Congestion Syndrome

The hallmark symptom of PCS is a chronic, dull aching pain in the pelvis and lower abdomen. This pain typically:

• Worsens throughout the day, especially after prolonged standing
• Increases during or after sexual intercourse
• Intensifies during menstruation due to hormonal effects on vein walls
• Worsens during pregnancy
• Improves when lying down

Additional symptoms may include:

• Dragging sensation or heaviness in the pelvis
• Feeling of fullness or pressure in the legs
• Lower back pain
• Worsening stress incontinence
• Irritable bowel symptoms, including bloating and changes in bowel habits
• Visible varicose veins in the upper thighs, buttocks, or vulvar area
• Abnormal menstrual bleeding
• Hip pain
• Urinary urgency or frequency

The pain typically affects one side but can involve both sides. Many women describe the discomfort as a persistent, heavy ache that interferes with daily activities and quality of life.

Causes and Risk Factors

Primary Causes

Pregnancy is the most common cause of pelvic congestion syndrome. During pregnancy, several factors contribute to the development of pelvic varicose veins:

• Increased estrogen weakens blood vessel walls and affects valve function
• Structural changes to the pelvis alter the course and function of pelvic veins
• Increased blood volume (up to 50% more during pregnancy) places added stress on veins
• Weight of the growing uterus compresses pelvic veins, impeding normal blood flow

PCS can develop during a first pregnancy but is more common in women who have had multiple pregnancies. Symptoms may persist and worsen after subsequent pregnancies.

Related Conditions

Two anatomical conditions can contribute to or worsen PCS:

• May-Thurner Syndrome (MTS): The right iliac artery compresses the left iliac vein, obstructing blood flow from the left leg and pelvis. This compression can cause blood to back up into the pelvic veins, worsening congestion.
• Nutcracker Syndrome: The left renal vein is compressed between the aorta and the superior mesenteric artery, increasing pressure in the ovarian vein and contributing to pelvic venous congestion.

Risk Factors

• Having had two or more pregnancies
• Being of reproductive age (20-45)
• Hormonal fluctuations
• Family history of varicose veins
• Prolonged periods of standing
• Obesity

Diagnosis

Diagnosing PCS requires specialized imaging because standard pelvic exams and ultrasounds may not reveal the condition. At Preferred Vascular Group, our vascular specialists use advanced diagnostic tools:

• Pelvic Venography: Considered the gold standard for diagnosing PCS. A catheter is inserted through a small puncture in the groin or neck, and contrast dye is injected to visualize the pelvic veins and identify reflux or dilation.
• Pelvic Ultrasound: A transvaginal or transabdominal ultrasound can sometimes detect dilated pelvic veins, though it may not capture the full extent of the condition.
• MRI or CT Venography: Cross-sectional imaging can reveal dilated ovarian veins and pelvic varicosities, and can identify contributing conditions like May-Thurner or Nutcracker Syndrome.
• Duplex Ultrasound: Used to evaluate for associated varicose veins in the legs and assess overall venous function.

Treatment Options

Conservative Management

Initial treatment may include:

• Pain management with non-steroidal anti-inflammatory drugs (NSAIDs)
• Hormonal therapy to reduce venous engorgement by suppressing ovarian function
• Compression garments to alleviate symptoms

However, conservative treatments often provide only temporary or partial relief, particularly in moderate to severe cases.

Minimally Invasive Treatment

For lasting relief, our vascular specialists offer:

• Pelvic Vein Embolization: The most effective treatment for PCS. A catheter is guided through a small puncture to the affected pelvic veins, where tiny coils or a sclerosing agent are placed to block blood flow in the dysfunctional veins. The procedure takes approximately one hour, is performed under conscious sedation, and patients typically go home the same day.
• Venogram with Embolization: A diagnostic venogram may be performed simultaneously with treatment, allowing our specialists to identify and treat affected veins in a single session.
• Radiofrequency Ablation (RFA): In select cases, radiofrequency energy can be used to close dysfunctional pelvic veins.

Most patients experience significant symptom improvement within 2-4 weeks after embolization, with studies showing success rates of 80% or higher [2].

Why Choose Preferred Vascular Group for PCS Treatment?

Pelvic Congestion Syndrome requires specialized expertise for accurate diagnosis and effective treatment. At Preferred Vascular Group, you benefit from:

• Experienced vascular specialists trained in advanced endovascular techniques
• Comprehensive diagnostic capabilities including venography and advanced imaging
• Minimally invasive, outpatient procedures with minimal downtime
• Compassionate, patient-centered care — we understand that chronic pelvic pain significantly impacts your quality of life
• Eight convenient locations across Georgia and Ohio

If you have been experiencing chronic pelvic pain, especially if it worsens with standing or activity, PCS may be the underlying cause. Our specialists can provide a thorough evaluation and develop a personalized treatment plan to help you find relief.

References

1. Phillips D, et al. “Pelvic congestion syndrome: etiology of pain, diagnosis, and clinical management.” Journal of Vascular and Interventional Radiology, 2014. PubMed
2. Kim HS, et al. “Embolotherapy for pelvic congestion syndrome: long-term results.” Journal of Vascular and Interventional Radiology, 2006. PubMed
3. Champaneria R, et al. “Effectiveness of embolisation or sclerotherapy of pelvic veins for reducing chronic pelvic pain: a systematic review.” Journal of Vascular and Interventional Radiology, 2016. PubMed