Currently in China, the incidence and death rate of lung cancer with low five-year survival rates has ranked the first position among all cancers. Early detection of lung cancer and early treatment are of great importance. However, patients with early satge lung cancer always do not present with any synptoms or signs, only to demonstrate solitary pulmonary nodules (SPNs) in radiology findings. So it is very critical to improve the ability to identify the SPNs, and with the development of sorts of diagnostic modalities, the accuracy in the evaluation of the SPNs has imporved greatly.
目前，肺癌已跃居成为我国发病率及死亡率最高的恶性肿瘤，总体5年生存率较低；早诊早治是提高肺癌患者生存率及改善预后的关键，而早期肺癌患者常无任何症状和体征，只在影像学上表现为肺孤立性结节病变。提高对孤立性肺结节良恶性的鉴别诊断能力是临床诊治过程中的难点与热点。随着各种诊治技术的发展，孤立性肺结节病变性质的诊断准确率已大大提高。