with nonspecific symptoms; making early diagnosis challenging. This case report describes a 42-year-old male patient with a brachial artery aneurysm; which was initially misdiagnosed as a benign swelling. The patient’s history; clinical presentation; diagnostic workup; and successful endovascular repair are discussed in detail. This report aims to highlight the importance of considering vascular anomalies in patients presenting with unusual swellings in the upper limb and emphasizes the value of prompt and accurate diagnosis to prevent potential complications.