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A BULGING VEIN AT THE BACK OF THE LEG MAY BE DUE TO A VARICOSE VEIN
OR RELATED TO THE INFLAMMATION IN THE AREA. A PHYSICAL EXAMINATION IS NECESSARY TO DETECT THE CAUSE. THIS IS NOT A NORMAL FINDING AND NEEDS TO BE INVESTIGATED.
I hope this information has been both informative and helpful for you.
Dr. Praveen Tayal