Exofocal Anterograde Transsynaptic Neuronal Death in the Globus Pallidus: Two Case Reports
A 40-year-old man v isited the emergency room because of right-sided weakness. Medical Research Council grade 4 weakness was noted on the right side upon neurological examination. No sensory signs were observed. Diffusion-weighted MRI of the brain performed on the second day of admission revealed high-intensity signal lesions in the left caudate nucleus and putamen. Although there was no change in the symptoms, a follow-up MRI was performed 4 days after admission; this disclosed newly developed high-intensity signals in the left SN and GP (). The patient's weakness improved without development of any extrapyramidal symptoms.