椎管内蛛网膜囊肿的脊髓造影CT扫描(附4例病例报告)

CAM OF SPINAL ARACHNOID CYST (A REPORT OF 4 CASES)

4例椎管内蛛网膜囊肿的CAM所见如下:①囊肿内充造影剂,其CT值很高,一般与蛛网膜下腔密度相同;②囊肿多位于硬膜囊或脊髓的后面或后侧面,常延伸数个椎节;③硬膜外囊肿多导致骨性椎管扩大,并可突入椎间孔。CAM可确立椎管内蛛网膜囊肿的诊断。

This paper presented the CAM (compute assisted myelography) findings of 4 cases suffered from spinal arachnoid cysts. CAM findings of spinal arachnoid cyst included the following characteristics: 1, Arachnoid cyst was filled with contrast medium so its attenuation value was almost as high as the density of the subarachnoid space. 2, Most arachnoid cysts lay posteriorly or posterolaterally to the dural sac or spine cord and usually extend over several vertebral segments. 3, The extradural arachnoid cyst may produce bony changes of the spinal canal and may enter or pass through the neural foramina. According to the above CAM findings,a diagnosis of spinal arachnoid cyst could be reached.