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Background  Approaching from the left brachial artery is an important access route in endovascular therapy for complicated aortic and peripheral artery cases.  Here, we report two cases of a poor access route from the left brachial artery because of asymptomatic axillary artery occlusion (AAO), despite no preoperative upper arm blood pressure laterality, a normal ankle brachial pressure index, and absence of occlusion of the subclavian artery on CT scan.    Case 1  Seventy-six-year-old female. We planned endovascular aneurysm repair (EVAR) for para-renal abdominal aortic aneurysm using the snorkel technique in the renal artery, but we failed to pass through the left subclavian artery when approaching from the left brachial artery because of AAO.    Case 2  Seventy-three-year-old female. We planned zone 2 thoracic endovascular aneurysm repair (TEVAR) for thoracic aortic aneurysm and embolization of the left subclavian artery via the left brachial artery, but we failed to pass through the left subclavian artery because of AAO, and therefore, we simply covered the orifice of the left subclavian artery using a stent graft without embolization.    Conclusions  The presence of an asymptomatic AAO may alter the treatment plan but may be difficult to diagnose preoperatively. In those cases in which a brachial or radial artery access is planned, contrast medium should be injected from the contralateral upper extremity during preoperative enhanced CT since the absence of halation of the ipsilateral subclavian/axillary vein provides improved visualization of the AAO which may lead to a better preoperative strategy including the choice of the side of upper extremity access.

surgical case reports

Two cases of asymptomatic axillary artery occlusion difficult to diagnose preoperatively: pitfalls and its solution in endovascular therapy when approaching from the upper extremity