Acute-Onset Oculomotor Paresis Attributed to Isolated P1 Occlusion Successfully Treated by Mechanical Thrombectomy.

OBJECTIVE

Case report of acute-onset oculomotor paresis attributed to thrombotic occlusion of the perforator-bearing P1 segment of the posterior cerebral artery with preserved perfusion of the basilar tip and P2 segment in the presence of a posterior communicating artery successfully treated by mechanical thrombectomy.

CONCLUSIONS

Short-segment thromboembolic P1 occlusion can present as acute-onset oculomotor paresis, so acute diplopia is an appropriate indication for performing a computed tomography or magnetic resonance imaging angiogram as mechanical thrombectomy appears to be an effective therapeutic option.