目的研究CT引导下穿刺针吸活 检联合DNA倍体检测应用于肺门病变的临 床诊断价值。方法 选取肺门部病变68 例，行CT引导下穿刺针吸活检联合DNA倍 体检测、CT引导下穿刺针吸活检、DNA倍 体检测。以手术结果(组织病理检查)为标 准对比三种方法诊断准确率。结果 CT引 导下穿刺针吸活检、DNA倍体检测、CT引 导下穿刺针吸活检联合DNA倍体检测诊断 正确率分别为89.71%、88.24%、97.06%， 与前两者比较，后者诊断正确率最高，P ＜0.05。结论 CT引导下穿刺针吸活检联 合DNA倍体检测弥补了单独使用CT引导下 穿刺针吸活检或DNA倍体检测的不足，显 著提高诊断正确率，为肺门病变治疗方案 提供重要依据，值得推广和应用。

Objective This paper is to investigate clinically diagnostic value of suction biopsy needle under CT in combination with DNA ploidy determination applied to lung door lesions. Methods Sixty eight patients with hilus pulmonis lesions undergoing needle biopsy aspiration combining ploidy DNA determination under CT, needle aspiration biopsy under CT, DNA ploidy determination. Diagnostic accuracy of three methods were compared as surgical results (histopathologic examination) as criterions. Results The diagnostic accuracies of puncture needle biopsy under CT, DNA ploidy determination, needle aspiration biopsy under CT in combination with DNA ploidy determination hit 89.71%, 88.24% and 97.06% respectively, and the diagnostic accuracy of the later one is higher when compared to that of the former one (P < 0.05). Conclusion The puncture needle biopsy under CT in combination with DNA ploidy determination make up for the insufficiency of single application of puncture needle biopsy under CT or DNA ploidy under CT, significantly improving diagnostic accuracy, providing important basis for the lung lesions treatment, and being worthy of popularization and application.