Pelvic Congestion Syndrome
Pelvic congestion syndrome (PCS) is a condition where enlarged, swollen veins in the pelvis cause chronic pelvic pain, often worsening after long periods of standing, at the end of the day, or during/after sex. It is similar to varicose veins but occurs inside the pelvis, usually affecting women who have had children. Symptoms can be persistent but the condition is treatable, and many people experience significant relief with the right management and support.
Overview | Symptoms & Causes | Diagnosis | Treatment Options
What is Pelvic Congestion Syndrome?
The pelvis contains a network of veins that drain blood from the uterus, ovaries, and surrounding organs. These veins contain valves that help keep blood flowing in the right direction - back toward the heart. In healthy veins, these valves prevent blood from pooling or flowing backwards.
Pelvic Congestion Syndrome occurs when the veins in the pelvis become enlarged, weakened, or develop faulty valves. When these valves don’t work properly, blood can flow backwards and pool in the veins (a process called venous reflux), causing them to stretch and become congested - similar to varicose veins seen in the legs, but inside the pelvis.
This pooling of blood can irritate surrounding tissues and nerves, leading to a dull, aching pain that typically worsens when standing for long periods, during or after sex, or toward the end of the day. PCS most commonly affects women who have had more than one pregnancy, but it can occur in anyone with weakened or dilated pelvic veins.
Understanding Pelvic Congestion Syndrome
Pelvic Congestion Syndrome usually develops gradually and is often characterised by persistent or recurring pelvic discomfort. The symptoms are typically related to the pooling of blood in enlarged pelvic veins and may fluctuate depending on posture and activity.
Common symptoms include:
- Dull, aching pelvic pain: Often described as a heavy or dragging sensation. It usually worsens later in the day, after standing for long periods, or after physical activity.
- Pain that worsens when standing and improves when lying down: The change in pressure affects how much blood pools in the veins.
- Pain during or after sex (dyspareunia): Congested pelvic veins can become sensitive during intercourse.
- Pain around the lower back, buttocks, or thighs: Discomfort may radiate from the pelvis.
- Worsening symptoms during menstruation: Hormonal changes can increase vein dilation.
- Visible or enlarged vulval, perineal, or leg varicose veins: Some people develop varicose veins around the vulva, buttocks, or inner thighs.
- Pelvic fullness or pressure: A sense of congestion or heaviness in the lower abdomen.
Causes & Risk Factors
| Hormonal influences (oestrogen) | Oestrogen relaxes vein walls, making them more likely to widen and contribute to pelvic vein congestion. |
| Pregnancy and childbirth | Increased blood volume and pressure during pregnancy can stretch vein walls; repeated pregnancies raise the likelihood of persistent pelvic vein dilation. |
| Reproductive age | PCS is most common in pre-menopausal women; symptoms usually improve after menopause as oestrogen levels fall. |
| Anatomical compression | Structures such as nearby arteries or bones can press on pelvic veins, restricting blood flow (e.g., Nutcracker or May-Thurner–type patterns). |
| Family history of vein problems | A genetic tendency toward weaker vein walls or venous insufficiency increases susceptibility. |
| Varicose veins elsewhere | Leg, vulval, or perineal varicose veins often occur alongside pelvic vein congestion, suggesting a shared underlying tendency. |
Diagnosing Pelvic Congestion Syndrome
Diagnosing Pelvic Congestion Syndrome can be challenging because symptoms are often long-standing and overlap with other causes of pelvic pain. A careful assessment helps rule out other conditions and identify signs of pelvic vein congestion.
A clinician will discuss your symptoms, menstrual history, and past pregnancies, then perform a pelvic examination to check for tenderness or visible varicose veins.
| Transvaginal Ultrasound | A transvaginal pelvic ultrasound with Doppler assesses the size of the pelvic veins and checks for backward blood flow (reflux). It is usually the first step and can strongly suggest PCS. |
| MRI | MRI offers a more detailed view of the pelvic veins and surrounding structures. It helps confirm the diagnosis and rule out other pelvic conditions when symptoms are unclear or persistent. |
| CT Scan | Less commonly used, but can show dilated pelvic veins or compression if MRI is not suitable. |
| Venography (specialist test) | Used mainly when a procedure such as vein embolisation is being considered. It directly maps the pelvic veins and confirms abnormal flow. |
Treatment Options
Treatment for Pelvic Congestion Syndrome aims to relieve pain and improve quality of life. Many people benefit from conservative measures first, with procedures considered if symptoms persist.
| Conservative management | Lifestyle measures such as regular exercise, weight management, and avoiding prolonged standing can help reduce venous pressure and discomfort. Pain relief with over-the-counter medications may also be useful. |
| Procedural options | Minimally invasive procedures like pelvic vein embolisation can block the affected veins, reducing reflux and pain. In some cases, surgery may be considered, but this is less common. |
| Medication | Hormonal treatments may help reduce vein dilation in some patients, particularly if symptoms are linked to the menstrual cycle. |
Management is tailored to each individual, balancing symptom relief, reproductive plans, and overall health.
How can Lanthorn help?
Transvaginal Ultrasound - £450
A first-line, non-invasive imaging tool that can identify dilated veins and evaluate blood flow patterns. Ultrasound helps confirm the presence of pelvic venous congestion and guides further assessment.
Pelvic MRI - £550
Provides a more detailed view of the pelvic veins and surrounding structures. MRI is especially useful for complex cases or when additional anatomical information is needed before planning treatment.
Referral to a specialist
If intervention is required, we can refer you to a vascular or interventional radiology specialist for further assessment and procedures, such as pelvic vein embolisation.
