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Behcet's syndrome is a variable vessel vasculitis characterized by recurrent oral and genital ulcers with concomitant skin, ocular, neurologic, gastrointestinal, and joint involvement. Herein, we present a patient who was diagnosed with Behcet's syndrome, which with magnetic resonance angiography showed occlusion of the right subclavian artery at the level of the thoracic outlet and reverse flow in the right vertebral artery consistent with subclavian steal syndrome. In addition, partial narrowing was noted in the left renal artery. The distribution of arterial involvement resembled Takayasu's arteritis, although the presence of mucocutaneous lesions, male gender, history of deep vein thrombosis, and HLA-B51 positivity favored a diagnosis of vasculo-Behçet's syndrome. We treated the patient with methylprednisolone and cyclophosphamide. After the regression of vascular inflammation with immunosuppressive therapy, stenting was performed in the left renal artery. [ABSTRACT FROM AUTHOR]