vermian cerebellar atrophycortical and cerebellar atrophyunilateral cerebellar atrophycerebellar hemisphere atrophycerebral and cerebellar atrophycongenital cerebellar atrophyhereditary cerebellar atrophysuperior cerebellar atrophyprogressive cerebellar atrophyisolated cerebellar atrophymoderate cerebellar atrophysevere cerebellar atrophy