“…While aneurysms are less common, there are reports of these in the left thyrocervical trunk, vertebral artery, left subclavian artery, lumbar artery, radial artery, coronary artery, and arc of Buhler. [2][3][4][5][6][7][8] The pathology of vascular lesions was first described by Reubi in 1944, who divided them into three types: an intimal form (intimal proliferation occluding the vascular lumen), an aneurysmal form (fibrohyaline thickening of the intima with fragmentation of the muscularis and elastica), and a nodular form (spindle or epithelioid cells disturbing the integrity of the vessels wall). Salyer and Salyer proposed that the pathogenesis of all arterial lesions involves the proliferation of Schwann cells with secondary degenerative changes.…”