[Angioplasty for subclavian artery stenosis: report of two cases]

We present our experience of percutaneous transluminal angioplasty (PTA) in the treatment of subclavian artery stenosis in two patients. One patient was a 66-year-old asymptomatic man. His left arm systolic blood pressure was 40 mmHg lower than that of his right arm. He had irregular segmental stenotic lesions (50% to 80%) at the proximal portion of the left subclavian artery. PTA was attempted via the left brachial artery. After the procedure, the stenotic lesion seemed totally dilated and his left arm systolic blood pressure was 8 mmHg lower than that of his right arm. Restenosis of the left subclavian artery was noted four months after the procedure. The second patient was a 51-year-old man with symptoms of intermittent dizziness, nausea and vertigo. His left arm systolic blood pressure was 30 mmHg lower than that of his right arm. He had 43% diameter stenotic lesion at the proximal portion of the left subclavian artery. PTA was attempted via right femoral artery. After the procedure, the stenotic lesion seemed markedly dilated and his left arm systolic blood pressure was 14 mmHg lower than that of his right arm. He is well three years post-procedure without evidence of restenosis.