目的探讨糖尿病合并肺底结核的CT表现,提高其诊断准确性。方法回顾性分析经临床证实的17例糖尿病合并肺底结核患者的CT表现。结果糖尿病合并肺底结核的主要表现有:干酪性肺炎,厚壁空洞,结节影,可见沿支气管分布的播散病灶;增强扫描病灶轻度强化或不强化,伴纵隔淋巴结肿大则有典型的环形强化。结论糖尿病合并肺底结核的CT表现有一定的特征,螺旋CT检查可以提高肺底结核的影像学诊断准确率。 Objective To investigate the CT findings of diabetes mellitus complicated with pulmonary tuberculosis and improve its diagnostic accuracy. Methods Retrospectively analyzed the CT findings of 17 clinically confirmed patients with diabetes mellitus and pulmonary tuberculosis. Results The main manifestations of diabetes complicated with pulmonary tuberculosis were: cheese pneumonia, thick-walled cavity, nodules, disseminated lesions were seen along the bronchus; enhanced lesion with mild or no enhancement, with mediastinal lymph nodes are typical The ring enhanced. Conclusion The CT findings of diabetes complicated with pulmonary tuberculosis have certain characteristics. Spiral CT can improve the diagnostic accuracy of pulmonary tuberculosis.