国产高清精品免费区-男女一进一出抽搐免费视频-中日韩一二三级黄色永久视频-日韩精品人妻一区二区免费视频-日本久久视频在线观看-99热这里只有精品88热-亚洲韩国黄色最新短视频一区-日韩伦理在线观看免费全集-国产av一区二区三区天堂

Spinal Dysraphisms

《英文msh詞典》Spinal Dysraphisms
[入口詞] Spinal Dysraphisms
[主題詞] Spinal Dysraphism
[英文釋義] Congenital defects of closure of one or more vertebral arches,which may be associated with malformations of the spinal cord,nerve roots,congenital fibrous bands,lipomas,and congenital cysts. These malformations range from mild (e.g.,SPINA BIFIDA OCCULTA) to severe,including rachischisis where there is complete failure of neural tube and spinal cord fusion,resulting in exposure of the spinal cord at the surface. Spinal dysraphism includes all forms of spina bifida. The open form is called SPINA BIFIDA CYSTICA and the closed form is SPINA BIFIDA OCCULTA. (From Joynt,Clinical Neurology,1992,Ch55,p34)