目的 探讨分析CT平扫与三期增 强扫描对周围神经纤维瘤的诊断价值。方 法 回顾性分析2015年9月到2017年9月期 间收集的16例经手术病理证实为周围神经 纤维瘤患者的CT资料，所选患者均接受CT 平扫及三期增强扫描，针对性分析CT平扫 及三期增强扫描对周围神经纤维瘤的诊 断应用价值。结果 ①螺旋CT扫描结果显 示，2例患者肿瘤位于眼眶，9例患者肿瘤 位于后纵隔，1例患者肿瘤位于后腹膜，1 例患者肿瘤位于会阴，3例患者肿瘤位于 四肢，大多肿块呈圆形、类圆形或半球 状，且肿块边缘光滑，分界清晰。②双 侧听神经瘤在CT扫描图像上呈稍低密度 影，增强扫描出明显强化，且强化不均 匀；双侧听神经瘤伴脑膜瘤、脊膜瘤在CT 扫描图像上显示为等密度影或稍高密度 影，增强扫描呈现出明显强化，且强化 均匀。结论 在临床周围神经纤维瘤诊断 中，运用CT平扫及多期增强扫描，可清晰 显示肿瘤的分布情况以及肿瘤的形状大 小，还能清晰显示其与周围组织关系，具 有重要的临床意义。

Objective To investigate the application value of CT plain scan and three phase enhancement scanning in the diagnosis of peripheral neurofibroma. Methods Analyzing the CT data of 16 patients with peripheral neurofiboroma which confirmed by surgery and pathology from September 2015 to September 2017. All the selected patients were received CT scan and three phase enhancement scanning. The diagnostic value of CT plain scan and three phase enhanced scan in the diagnosis of peripheral neurofibroma was targeted analyzed. Results ① The results of spiral CT scan indicated that 2 cases of patients with tumors in the orbital, 9 cases of patients with tumors located in the posterior mediastinum, 1 cases of patients with tumors located in the retroperitoneum, 1 cases of patients with tumors located in the perineum, 3 cases of patients with tumors in the extremities. And most of the tumors were round, oval or hemispherical, and characterized by smooth edge, block, swollen and clear demarcation. The bilateral acoustic neuroma showed slightly low density in CT scan, but showed obvious enhancement, and inhomogeneous enhancement. Bilateral acoustic neuroma with meningioma showed isodensity or slightly high density shadow in CT scan, and showed obvious enhancement, and homogeneous enhancement. Single or multiple gliomas showed as low density images in CT scan images, the tumor boundary was blurred and was not obvious in enhancement scaning. And the larger tumor appeared in the surrounding tissue. Conclusion In the diagnosis of peripheral neurofibroma, CT scanning and multi-phase enhancement scanning shows the distribution, size of tumor, and the relationship with surrounding tissues. And it shows an important clinical significance.