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目的探讨MRI诊断椎管内表皮样囊肿的价值。方法回顾性分析经手术组织病理证实的21例椎管内表皮样囊肿患者MRI影像资料。结果 MRI术前诊断椎管内表皮样囊肿18例,诊断准确率85.7%;MRI表现T1WI呈均匀等信号9例、均匀低信号6例、低信号为主混杂信号5例、高信号为主混杂信号1例,8例肿瘤边缘可见脂肪信号;T2WI呈高信号18例、等高信号3例,19例肿瘤边缘可见环形等低信号囊壁;17例行增强扫描,3例肿瘤周围可见轻微强化,14例无强化。结论 MRI有助于术前椎管内表皮样囊肿诊断。
Objective To investigate the value of MRI in diagnosis of epidermoid cyst of spinal canal. Methods MRI data of 21 patients with endoscopic epidermoid cyst proved by histopathology were analyzed retrospectively. Results MRI preoperative diagnosis of epidermoid cyst in 18 cases, the diagnostic accuracy rate of 85.7%; MRI T1WI uniform signals were equal in 9 cases, uniform low signal in 6 cases, low signal mainly mixed signal in 5 cases, high signal mainly mixed There were 18 cases of high signal in T2WI and 3 cases of high signal in 19 cases with ring-shaped low signal wall on the edge of tumor, enhanced scanning in 17 cases and mild enhancement in 3 cases , 14 cases without strengthening. Conclusion MRI is helpful for the diagnosis of epidermoid cyst in preoperative spinal canal.