周围型小肺癌是指直径小于3cm的周围型肺癌,其影像表现与良性结节中有部分重叠,容易误诊,因此,如何提高周围型小肺癌的早期诊断正确率一直是影像诊断的难点和重点。为此,本文收集我院近年来有完整CT资料,经手术病理或细胞学或临床治疗证实的周围型小肺癌、肺炎性结节以及肺结核 Peripheral small lung cancer refers to the peripheral diameter of less than 3cm of lung cancer, the image performance and benign nodules in some overlap, easy to misdiagnosis, therefore, how to improve the early diagnosis of peripheral small lung cancer has been the diagnostic accuracy and difficulty of imaging . To this end, this article collected in our hospital in recent years have a complete CT data, confirmed by surgical pathology or cytology or clinical treatment of peripheral small lung cancer, pulmonary nodules and pulmonary tuberculosis