Chiari malformation
noun [ C or U ] medical specialized uk/kiːˈɑːri mæl.fɔːˌmeɪ.ʃən/ us/kiˈɑːr.i mæl.fɔːrˌmeɪ.ʃən/ (also Arnold-Chiari malformation); (cerebellomedullary malformation syndrome)
希阿里氏畸形
a physical problem present from birth in which part of the brain is pushed through the opening for the spinal cord at the base of the skull, blocking the flow of fluid into the brain and spinal cord