目的 探析CT轴位平扫与冠状位 平扫在鼻窦肿瘤患者临床诊断与鉴别诊断 中的应用价值。方法 选择我院耳鼻喉科 2013年8月-2015年8月期间收治97例行CT 检查的患者作为研究对象，所有患者均行 CT检查，包括轴位平扫与冠状位平扫，以 病理结果为基准，计算不同扫描方法的诊 断准确率并与联合扫描的结果进行比较， 同时总结良恶性鼻窦肿瘤的影像学特征与 鉴别要点。结果 97例患者病理结果为56 例良性肿瘤、41例恶性。CT轴位平扫诊断 准确率为70.1%(68/97)，CT冠状位平扫诊 断准确率为77.3%(75/97)，二者差异的比 较无统计学意义。轴位+冠状位平扫诊断 准确率为88.7%(86/97)，分别高于CT轴位 平扫与冠状位平扫，差异有统计学意义(P ＜0.05)，提示轴位+冠状位联合具有更大 诊断价值。结论 CT为非侵入性且分辨力 较高的检查手段，可直接显示鼻腔、鼻窦 内病灶大小与范围、肿瘤性病变、沟通途 径及病变周围情况，有利于尽早确诊并为 临床治疗方案制订提供有用信息。轴位平 扫可作为冠状位平扫的补充，获得窦壁骨 质破坏及周围组织浸润情况等信息，进一 步提高诊断准确性。

Objective To study the application value of CT axial scan and coronal scan in the clinical diagnosis and differential diagnosis of nasal sinus neoplasms. Methods 97 patients who underwent CT examination in E.N.T. department of our hospital from August 2013 to August 2015 were selected as the research objects. All patients underwent CT examination, including axial scan and coronal scan. Based on the pathological results, the diagnostic accuracy of different scanning methods was calculated and compared with the results of combined scanning. Meanwhile, the imaging features and key points of differentiation of benign and malignant nasal sinus neoplasms were summarized. Results The pathological results of 97 patients were 56 cases with benign neoplasms and 41 cases with malignant ones. The diagnostic accuracy of CT axial scan was 70.1% (68/97) while of coronal scan was 77.3% (75/97). There were no statistically significant differences between the two. The diagnostic accuracy of axial combined with coronal scan was 88.7% (86/97), which was significantly higher than that of CT axis and coronal scan, respectively. The difference was statistically significant (P＜0.05), which indicated that the axial combined with coronal position was more valuable in diagnosis. Conclusion CT is a non-invasive and higher-resolution examination method which can directly display the size and range of lesions in nasal cavity and sinuses, tumor lesions, communication channels and situation around the lesions. It is helpful for early diagnosis and can provide useful information for making clinical treatment plan. Axial plain scan can be used as a supplement to coronal scan to obtain information such as bone destruction of sinus wall and surrounding tissue invasion and to further improve the diagnostic accuracy.