Cece wrote:In this particular situation I do not think the vein was squeezed between two structures, since it was able to expand under valsalva as seen using ivus.
In May Thurner, when the iliac artery is lying on the iliac vein and compressing it, what is on the other side? Is it being squeezed? Why is MT not a leave-me-alone lesion...I suppose because it is nowhere near the heart and brain!
It is always
squeezed between two structures.
In May Thurner syndrome the Iliac vein is between the Iliac artery and the backbone. Click on the link and you will see the anatomy.http://radiology.rsna.org/content/233/2/361/F1.expansion.html
For the Jugular vein I think is a muscle gently squeezing the vein. Valsalva can overcome the compression but this only means it is not an intrinsic narrowing but a narrowing from the outside compression.
Since CCSVI is a problem with flow I think in the above case a stent would help overcame the mild compression causing the still significant narrowing.
This is what they do in Poland where they do not have an IVUS yet anyway.
Only more testing will clarify this point and maybe lead to alternative treatment.
If you look at your arm and hand, you can see that the veins do not have any problems going around the bones and tendons present there.
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