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MRI in a 72-year-old man with beginning dementia suffering from transient right hemiparesis and aphasia due to cerebral amyloid angiopathy

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Acute cortical subarachnoid hemorrhage on (b) axial FLAIR, (c) axial susceptibility-weighted, and (d) axial diffusion-weighted images (arrow). (a, e) Enlarged perivascular spaces on axial T2-weighted images (arrow). (b, f) Focal gliosis on axial FLAIR (arrowhead). (c, g) Multiple microbleeds, cortical superficial siderosis, and residual atypical intracerebral bleeding in the left frontal area (arrowhead) on axial susceptibility-weighted images. (Source: Weidauer S, Neuhaus E, Hattingen E. Cerebral superficial siderosis: etiology, neuroradiological features and clinical findings. Clin Neuroradiol 2023;33[2]:293-306. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)