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. 2021 Jan 12;11:618109. doi: 10.3389/fneur.2020.618109

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Copyright © 2021 Shao, Fan, Luo, Wong, Zhang, Guan and Qiu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Lesions on basal ganglia and their signal change over time. Case 1 was a 66-year-old male patient with left faciobrachial dystonic seizure (FBDS). A lesion was observed on the right basal ganglia (BG) with T1 hyperintensity and diffusion-weighted imaging (DWI) hypointensity, accompanied by ring-shaped enhancement (A). Case 2 was a 57-year-old male patient with epileptic seizure. Brain MRI showed prominent right caudate nucleus atrophy and DWI hypointensity 9 months after onset (B). Case 3 was a 61-year-old male patient presenting with left FBDS. Hyperintensity on T1, T2, fluid-attenuated inversion recovery (FLAIR), and DWI were initially observed on right BG (C1). Hypointensity on DWI began to appear 2 months after onset (C2) and became more prominent accompanied by atrophy 3 months later (C3). High signals were replaced by hypointensity 30 months after onset (C4).