A 48-year-old man presented with impaired joint movement and buccofacial apraxia. The disease progressed for six years associating an akineto-hypertonic syndrome, marked anarthria, saliva incontinence, bi-opercular syndrome, bucco-facial apraxia, severe global gestual apraxia and a frontal syndrom. Oculo-motricity and gait were normal. Magnetic resonance imaging of the brain demonstrated fronto-parietal atrophy and HMPAO Tc99 tomography revealed hypoperfusion of the cortex clearly predominating in the left parietal region. These particular findings with predominantly intense joint involvement is similar to the clinical picture in corticobasal degeneration--subcortical signs (progressively uncontrollable hypertonia) together with cortical signs (severe gestual apraxia). The neuroradiological imaging and functional results also suggest a degenerative process.
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