Comment by bregma

A thrombus is a blood clot in a distal blood vessel. When it becomes dislodged it becomes known as an embolism which, if it settles in a pulmonary or coronary artery, can rapidly become fatal. The chances of this happening are greatly increased in the elderly and those with known circulatory problems.

C'mon litle guy. You can make yourself famous. Be brave and let go of the wall of that leg vein. Say good bye to that comfy cankle and enter into your full glory.