• World Neurosurg · Oct 2020

    Case Reports

    Two cases of posterior cerebral artery P2 occlusion with motor weakness improved by acute mechanical thrombectomy.

    • Hidekazu Yamazaki, Masafumi Morimoto, Chiyoe Hikita, Mitsuhiro Iwasaki, Maeda Masahiro, Yasufumi Inaka, Shinya Fukuta, Hiroaki Sato, and Jyunpei Nagasawa.
    • Department of Neurology and Neuroendovascular Treatment, Yokohama Shintoshi Neurosurgical Hospital, Yokohama, Japan. Electronic address: hidekazu.y0815@gmail.com.
    • World Neurosurg. 2020 Oct 1; 142: 13-16.

    BackgroundClinical evidence to support the use of mechanical thrombectomy (MT) for posterior cerebral artery P2 segment occlusion (P2O) has not been established, and hemiplegia due to P2O improved by MT to our knowledge has not yet been reported. We report 2 cases of P2O with hemiplegia improved by MT.Case DescriptionIn case 1, a 68-year-old man was admitted with right hemiplegia and dysesthesia (National Institutes of Health Stroke Scale score 14). Head magnetic resonance imaging showed acute ischemia in the left inferolateral thalamus and posterior limb of the internal capsule. Angiography showed left P2O, which was recanalized after MT. Hemiplegia improved immediately following recanalization, and modified Rankin Scale score at discharge was 0. In case 2, a 69-year-old man was admitted with left hemiplegia and dysesthesia (National Institutes of Health Stroke Scale score 8). Head magnetic resonance imaging showed acute ischemia in the right inferolateral thalamus and posterior limb of the internal capsule. Angiography showed right P2O, which was recanalized after MT, as in case 1. His symptoms resolved completely.ConclusionsP2O may cause severe motor deficit. In such cases, MT may contribute to safely improving patients' deficits.Copyright © 2020 Elsevier Inc. All rights reserved.

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