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Because of its similarities to deep vein thrombosis (DVT), May–Thurner syndrome is rarely diagnosed amongst the general population. In this condition, the right iliac artery sequesters and compresses the left common iliac vein against the lumbar section of the spine, [5] resulting in swelling of the legs and ankles, pain, tingling, and/or numbness in the legs and feet. [6]
The external iliac vein and internal iliac vein unite in front of the sacroiliac joint to form the common iliac veins. [2] Both common iliac veins ascend to form the inferior vena cava behind the right common iliac artery at the level of the fifth lumbar vertebra. [3] The vena cava is to the right of the midline and therefore the left common ...
This is a rare condition in which blood clots occur in the iliofemoral vein due to compression of the blood vessels in the leg. The specific problem is compression of the left common iliac vein by the overlying right common iliac artery. Many May-Thurner compressions are overlooked when there is no blood clot.
Historically, it was commonly seen during pregnancy and in mothers who have just given birth. In cases of pregnancy, it is most often seen during the third trimester, resulting from a compression of the left common iliac vein against the pelvic rim by the enlarged uterus. Today, this disease is most commonly (40% of the time) related to some ...
Compression of the left external iliac vein by the right common iliac artery or left hypogastric artery can occur as it crosses over the vein into the pelvis. The right external iliac vein can similarly be compressed. Such compressions may contribute to deep vein thrombosis. [5] Failure to develop or agenesis of the external iliac vein has been ...
In human anatomy, iliac vein refers to several anatomical structures located in the pelvis: Common iliac vein, formed by the external and internal iliac veins, drains into the inferior vena cava; Deep circumflex iliac vein, formed by the union of the venae comitantes of the deep iliac circumflex artery, and joins the external iliac vein
May–Thurner syndrome – a similar compressive pathology involving the left common iliac vein; Backpack palsy – a similar compressive pathology involving the long thoracic nerve, or adjacent brachial plexus nerves; nerve compression syndrome; nerve decompression
Nonthrombotic iliac vein lesions (NIVL) include May-Thurner Syndrome (MTS) whereby there is compression of the left iliac venous outflow usually by the right iliac artery leading to left leg discomfort, pain, swelling and varicose veins. NIVL encompasses compression of the iliac veins on either the right or left side. [25]