A 27-year-old Korean male complained of chest pain and dyspnea that began after he had squeezed a mass on the medial side of his right upper arm. Computed tomography angiography and venous Doppler ultrasonography revealed a right basilic vein aneurysm with an organized thrombosis causing pulmonary emboli. After 1 month of anticoagulation, the aneurysm was ligated and resected. During the operation, multiple venous aneurysms filled with organized thrombi were observed. This is the first reported case of a thrombotic primary venous aneurysm of an upper extremity causing pulmonary emboli after it was squeezed.
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