Why is the leg swollen and painful after removing the tube due to blood clots in the leg?

In this case, if there is stenotic thrombosis, interventional placement of a filter can prevent the thrombus from falling off and causing serious complications such as pulmonary embolism. If swelling occurs after removing the filter, it is generally a sign of venous return disorder. Blockage is a common complication after thrombosis. It is recommended to review the ultrasound and if there is no new recurrence of thrombus, it should not be a big problem.