Spontaneous Subclavian-Axillobrachial Artery Aneurysm - A Rare Case Report

Aneurysms of Subclavian, Axillo-Brachial arterial segments are rare in occurrence. We report a case of spontaneous aneurysm involving subclavian artery with pseudoaneurysm of axillary artery due to degenerative etiology in a 40-year-old male, presented with pulsatile left axillary swelling and intermittent claudication of left upper limb. Duplex scanning and computed tomography angiography confirmed diagnosis of left subclavian artery aneurysm and pseudoaneurysm of axillary artery with brachial artery occlusion. Patient underwent aneurysmectomy and interposition vascular graft reconstruction with Impra BIRDD 6 mm vascular graft from proximal subclavian artery to proximal brachial artery with an uneventful recovery. Pathological biopsy suggestive of degenerative etiology. This case is reported in view of unusual presentation of spontaneous degenerative aneurysm of subclavian artery and pseudoaneurysm of axillary artery. No other similar case was reported in the literature to the best of our knowledge involving subclavian axillobrachial segment.