“…2 A search of the reported data revealed only seven cases of subclavian pseudoaneurysm related to IVDU. [3][4][5][6][7][8] Subclavian pseudoaneurysms can present as a pulsatile neck mass, chest or shoulder pain, hoarseness, hemoptysis, brachial plexus palsy (Pancoast syndrome), or venous stasis and have been associated with limb ischemia, stroke, and rupture. The clinical suspicion for a subclavian pseudoaneurysm should prompt a CT angiogram, which can confirm the diagnosis and provide anatomic information to guide surgery.…”