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目的探讨颅内蛛网膜囊肿(intracranial arachnoid cyst,IAC)的CTC影像学分类与临床意义。方法对22例CT诊断为IAC病人行CT蛛网膜下腔-脑池造影(CTcisternography,CTC),根据CTC囊肿内是否有造影剂充盈进行分类。选择非交通性蛛网膜囊肿(noncommnicating intracranial arachnoid cyst,NCIAC)病例,行神经内镜下NCIAC-脑池/脑室造瘘术治疗。结果22例IAC病例经CTC检查15例确诊为NCIAC,阳性率为68.2%,NCIAC病例有确切的神经系统症状体征,术后症状改善或消失。9例NCI-AC病人CT随访示囊腔明显缩小,脑组织复位。结论①CTC简便、安全,对IAC病人具有诊断特异性,运用CTC可分类交通性蛛网膜囊肿(commnicating intracranial arachnoid cyst,CIAC)和NCIAC;②症状性NCIAC具有神经外科手术指征。
Objective To investigate the CTC imaging classification and clinical significance of intracranial arachnoid cyst (IAC). Methods Totally 22 patients with IAC who underwent computed tomography (CT) scans were included in this study. The patients underwent CT CT scan with CTC. CTCs were categorized according to whether there was contrast media filling in CTC cysts. The patients with noncommnicating intracranial arachnoid cyst (NCIAC) were selected and underwent endoscopic endoscopic NCCI / cisterniostomy. Results Twenty-two cases of IAC were diagnosed as NCIAC by CTC. The positive rate was 68.2%. The exact symptom of neurological symptoms were found in NCIAC patients. The symptoms improved or disappeared after operation. Nine cases of NCI-AC patients with CT showed significantly reduced cysts, brain tissue reset. Conclusions ① CTC is simple and safe. It has diagnostic specificity for IAC patients. CTC can be used for classification of CIAC and NCIAC. ② Symptomatic NCIAC has neurosurgical indications.