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May-Thurner Syndrome

May-Thurner syndrome is compression of the left iliac vein by the artery crossing over it. This is normal anatomy, but in some people the artery presses on the vein enough to thicken the vein wall over time. Surgical exploration in two of these patients verified marked hypertrophy of the intima of the left common iliac vein that caused partial obstruction. Surgical repair resulted in great improvement. There is evidence that intimai injury may also take place in the form of a spur when the compression occurs over time. Despite many collateral vessels throughout the pelvis, significant compression can produce symptomatic edema. Anatomic findings at venography are characteristic of this syndrome. Hemodynamic pressure measurements are of ancillary help in confirming the diagnosis.

In contrast to the right common iliac vein, which ascends almost vertically to the inferior vena cava, the left common iliac vein takes a more transverse course The differences in circumference of the ankle and calf from the left to the right were 2 and 1.5 cm, respectively, with only trace difference at the knee (Fig. 2). An ultrasound was done that showed no evidence of DVT. This condition may occur in adults or children. Surgical repair resulted in great improvement.These results are generally better compared with results in patients who have deep venous thrombosis before the compression is recognized.

Causes of May-Thurner Syndrome

Here are the list of the possible cause of May-Thurner Syndrome:

  • It has recently been discovered that extrinsic compression of the left iliac vein by the crossing right iliac artery is a cause of deep venous thrombosis
  • Turner syndrome is caused by the loss of genetic material from one of the chromosomes.
  • This syndrome is more common in women (ratio 3:1), with a mean age at presentation of 48 years

Symptoms of May-Thurner Syndrome

Some sign and symptoms related to May-Thurner Syndrome:

  • The 1-year patency rate for patients with acute symptoms who received stents was 91.6%; for patients with chronic symptoms who received stents, the 1-year patency rate was 93.9%. Five technical failures occurred.
  • Clinical symptoms include headache, which is exacerbated during changes of position, disturbances of consciousness, oedema, tension or pain in the face and neck, blurred vision, retro-orbital pressure, and orthopnoea
  • The patient's symptoms improved but did not resolve completely, probably due to a chronically occluded left superficial femoral vein that did not respond to endovascular recanalization..

Treatment of May-Thurner Syndrome

  • The act, manner, or method of handling or dealing with someone or something: “the right to equal treatment in the criminal and juvenile justice system” (Susan C. Ross)
  • We report our experience on the treatment of extensive iliofemoral deep venous thrombosis due to May-Thurner syndrome using endovascular techniques.
  • Therapy, the act of remediation of a health problem
  • A written sketch outlining the plot, characters, and action for a screenplay but not including certain elements of a finished screenplay, such as camera directions and dialogue.


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