关键词: 孤立性肺结节, 肺肿瘤, 危险因素, 综述

Abstract: Progress in computed tomography（CT） imaging technology has led to a significant increase in the detection rate of solitary pulmonary nodules.Although health awareness is improving，the early signs of pulmonary nodules are becoming more difficult to identify due to the effects of many factors.If pulmonary nodules can be fully evaluated as benign or malignant at the early stage，this would have a positive effect.This article summarizes and reviews the diagnostic value of related factors such as age，gender，serum tumor markers，CT imaging features，smoking history，and previous tumor history in patients with benign and malignant solitary pulmonary nodules.

Key words: Solitary pulmonary nodule, Lung neoplasms, Risk factors, Review