What is Effort Subclavian Vein Thrombosis?
Effort subclavian vein thrombosis — also known as Paget-Schrotter syndrome — is a blood clot that occurs in the vein under the collarbone known as the subclavian vein. It usually occurs when the vein is compressed between the first rib and collarbone and is a special type of thoracic outlet syndrome. The blood clot that forms in the subclavian vein causes blood to back up in the veins in the arm, causing the veins to swell and the arm to swell and ache.
