[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.