Bilateral parkinsonism in a patient with infarcts involving the unilateral basal ganglia. 2020

Shiroh Miura, and Masayuki Ochi, and Hirofumi Ochi, and Michiya Igase, and Naoto Kawaguchi, and Masao Miyagawa, and Yusuke Uchiyama, and Yasumasa Ohyagi
Department of Neurology and Geriatric Medicine, Ehime University Graduate School of Medicine, Ehime, Japan.

We describe a 61-year-old woman with bilateral parkinsonism caused by unilateral infarction limited to the territory of the lenticulostriate arteries. Although dopamine transporter imaging with single-photon emission computed tomography (DaTSPECT) demonstrated reduced putaminal tracer binding concordant with the size and location of the vascular lesion, the specific binding ratio was within the normal range. Five months after onset, the patient was free from parkinsonism without the use of any antiparkinsonian agents. When patients show bilateral parkinsonism, it is important to consider infarction of the lenticulostriate arteries. Additionally, DaTSPECT might be useful for predicting the prognosis of parkinsonism caused by infarction.

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