【摘要】 本文报告20例先天性四脑室中侧孔闭锁的CT诊断,男性13例,女性7例,年龄45d～8岁.CT表现:第四脑室囊状扩大9例;第四脑室囊状扩大通过小脑溪与后颅窝小囊腔相通4例,或大囊腔相连3例;第四脑室与两侧小脑半球大小不等的两囊腔相连1例;扩大的第四脑室向天幕上延伸7例;枕大池、脑沟、脑裂消失20例;第三脑室及两侧侧脑室对称性重度积水扩大20例.合并右额顶区硬膜下积液1例.本病需与后颅窝蛛网膜囊肿、囊性新生物和变异的巨大枕大池以及重度小脑发育不全鉴别.更多还原

【Abstract】 This paper reported 20 cases of Dandy-Walker Syndrome which diagnosed by CT. There were 13 males and 7 females. The age of the patients ranged from 45 days to 8 years. The CT manifestations were: cystic dilation of the fourth ventricle. 9 cases; large cyst of the posterior fossa with thinning of the cerebellar hemispheres. 3 cases; cystic dilation of the fourth ventricle with connection to small cyst of posterior fossa through the vallecula. 4 cases, and to large cyst. 3 cases; the fourth ventricle with connection to different size of cyst of both cerebellar hemispheres, 1 cases; supratentorial extension of cystic dilation of the fourth ventricle. 7 cases; disappearance of the cisterna magna and sulcuses of the brain . 20 cases; severe enlargement of the lateral and third ventricles. 20 cases; accompanying subdural fluid accumulation of right frontal and parietal areas, 1 case. This disease should be differentiated from variation of the large cisterna magna, arachnoid cyst of the posterior forssa, cystic neoplasm, and severe hypoplasia of the cerebellum.更多还原