PMC4557084_01
Main Clinical Findings of the Patient. The video demonstrates 1.5 Hz palatal tremor, gait ataxia, saccadic pursuit, arm ataxia, and abnormalities in deep tendon and plantar reflexes. The video was recorded 36 months after motor symptom onset.
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The first brain MRI scan was performed due to tinnitus and hearing loss 7 years before the onset of symptoms (Figure 1A). The second scan was performed 6 months after PAPT symptom onset (Figure 1B), and the third scan and FDG-PET were performed 36 months after symptom onset (Figure 1C). FDG-PET at 36 months showed bilateral olivary hypermetabolism (Figure 1C).