[Diagnosis of MSA-P and PSP-P in Early Stage].

Differentiating Parkinson's disease (PD) from multiple system atrophy with predominant parkinsonism (MSA-P) or progressive supranuclear palsy-parkinsonism (PSP-P) in early stages of the disease is extremely difficult. MSA-P and PSP-P are often misdiagnosed as PD. MSA-P and PSP-P may be diagnosed in their early stages by considering clinical symptoms and neuroradiological findings together. Diffusion weighted images, T2 weighted images and proton density weighted images are useful for diagnosis MSA-P in early stages , while the magnetic resonance parkinsonism index is useful tool for diagnosis of PSP-P in the early stage.