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