Spinocerebellar ataxia

Last revised by Rohit Sharma on 13 Dec 2022

Spinocerebellar ataxias comprise a large and expanding group of diseases characterized by degeneration of the spinal cord and cerebellum. 

There are 50 individual spinocerebellar ataxias (as of December 2022) 2 referred to sequentially as SCA1, SCA2, ... in order of their discovery and genetic characterization.

Radiographic features

Although individual spinocerebellar ataxias vary in morphological changes, atrophy of the cerebellum is a relatively constant finding. Extracerebellar regions are also affected, depending on the specific SCA 1

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