It’s likely that this is a section of calcified stylo-hyoid ligament; the styloid can occasionally get fractured but there’s quite a gap so I’d plump for calcified ligament, a shame you can’t see how long this is… It looks from this image as if there’s a reasonable gap between the styloid & C1 process, but without a CT with contrast and looking from other angles you can’t see for sure… If it is the styloid process, then as this is very short (the width & angle can be enough to cause IJV compression) , if you wanted to try surgery you would need a really experienced & skilled surgeon as it would need removing at the skull base- so probably Mr Axon in England would be the best person to do this…
Are you able to push for a CT with contrast do you think? It’s probably the best way to either rule jugular compression in or out?
You might find this video from Dr Costantino interesting, he explains symptoms and shows the anatomy quite well:
Dr Costantino IJV compression and surgery - Symptoms and Treatments / Doctor Information - Living with Eagle
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