目的　分析灰质异位症的CT表现和分型。方法　回顾性分析 2 6例灰质异位症患儿的临床及CT资料 ,其中男 11例 ,女15例 ,年龄 2d～ 9岁 ,平均 2 .6岁。结果　 (1)室管膜下型 14例。合并脑膜膨出 5例 ,Dandy -Walker畸形 1例 ,枕大池蛛网膜囊肿1例。 (2 )皮质下型 7例 ,4例合并胼胝体发育不全。 (3 )带状型 5例。结论　CT不仅能显示室管膜下型、皮质下型、带状型灰质异位的形态学表现 ,而且能够发现各种合并畸形 Objective To analyze the CT manifestations and classification of gray matter. Methods The clinical and CT data of 26 children with gray matter ectopic disease were retrospectively analyzed. There were 11 males and 15 females with a mean age of 2.6 years (range, 2 days to 9 years). Results (1) Subependymal type in 14 cases. 5 cases with combined meningocele, 1 case of Dandy-Walker malformation, 1 case of arachnoid cyst in the cistern. (2) Subcortical type in 7 cases, 4 cases combined corpus callosum hypoplasia. (3) ribbon type in 5 cases. Conclusion CT can not only show the subependymal subtype, subcutaneous type, ribbon gray matter ectopic morphological manifestations, and can be found in a variety of combined deformity