MayThurner

MayThurner is a condition also known as May-Thurner syndrome or Iliac vein compression syndrome. It is a vascular disorder where the left iliac vein is compressed by the overlying right iliac artery. This compression can lead to reduced blood flow from the left leg, increasing the risk of deep vein thrombosis (DVT) in that leg.

The condition is thought to arise from the anatomical positioning of the iliac vessels. The right iliac artery typically crosses over the left iliac vein, and repeated pulsatile pressure from the artery can cause the vein to narrow over time. This narrowing can promote the formation of blood clots. Risk factors for developing DVT in the context of May-Thurner syndrome include prolonged immobility, dehydration, and certain genetic predispositions to clotting.

Symptoms can vary but often include swelling, pain, and heaviness in the left leg. In more severe cases, skin discoloration or ulcers may develop. Diagnosis typically involves imaging studies such as ultrasound, CT venography, or MR venography to visualize the iliac veins and identify any compression.

Treatment aims to restore blood flow and prevent further clot formation. This may involve anticoagulant medications to thin the blood and prevent clots. In cases of significant compression or existing DVT, procedures like angioplasty to widen the vein, stent placement to keep it open, or thrombolysis to dissolve existing clots may be necessary. The long-term management strategy depends on the severity of the compression and the presence of any complications.