Percutaneous transluminal angioplasty for stenosis of the posterior cerebral artery in progressive stroke. Case report.

A 59-year-old male presented with repeated transient hemianopsia and hemiparesis on the left. Emergency magnetic resonance angiography showed stenosis of the right posterior cerebral artery (PCA). Endovascular recanalization with percutaneous transluminal angioplasty was performed immediately after the diagnosis. Patency of the PCA was successfully restored. The patient was discharged without neurological deficits. Progressive stroke in the PCA territory is rare. However, emergency endovascular recanalization is possible after prompt clinical diagnosis based on repeated diffusion-weighted magnetic resonance imaging and angiography after a 24-hour interval.