12.小腦扁桃體下垂5mm至頸椎脊椎腔且合併有脊髓空洞症(syringomyelia),但沒有合併脊柱裂(spinal
bifida)或水腦(hydrocephalus),應該歸屬下列何種異常?
(A)Chiari I malformation
(B)Chiari II malformation
(C)Dandy-Walker syndrome
(D)myelomeningocele
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統計: A(256), B(82), C(49), D(25), E(0) #2363323
統計: A(256), B(82), C(49), D(25), E(0) #2363323