Percutaneous transluminal angioplasty for intracranial atherosclerotic stenosis.

Eleven patients with symptomatic intracranial atherosclerotic stenotic lesions underwent percutaneous transluminal angioplasty (PTA). Seven patients had stenosis in M1 segment of the middle cerebral artery (MCA), two in the cavernous internal carotid artery, one in M2 segment of the MCA and one in the P2 segment of the posterior cerebral artery. Initial successful dilatation (less than 50% residual stenosis) was obtained in nine patients (81.8%). Permanent neurological deficit related to PTA was seen in one patient and transient symptoms were observed in two. Re-stenosis was revealed in two cases (18.2%) in the early followup period. All patients with successful dilatation and without re-stenosis never had TIA or stroke after PTA. Intracranial PTA is an effective procedure, but several problems remain to be solved.