Brachial Artery Thrombosis as a Presentation of Non-Small Cell Pulmonary Carcinoma Growing Into the Left Atrium

We present a case of a thrombus in the left brachial artery as a cardioembolic presentation of pulmonary carcinoma. There have been few reports describing this clinical presentation, but if present, prognosis is very poor. Therefore, a cardioembolic event should be borne in mind as an atypical presentation of pulmonary carcinoma. (Level of Difficulty: Beginner.)