本文报告经病理证实的青年人肺癌20例,其中男性12例,女性8例,年龄在20～30岁之间,平均27.5岁。本文从临床、病理类型和X线表现进行分析。青年人肺癌在病理类型上以未分化型癌为最多见,X线表现以中心型肺癌为多见,X线表现无特异征象。临床上以咳嗽、胸痛、咯血为主要症状。 This article reports 20 cases of pathologically confirmed lung cancer in young people, including 12 males and 8 females, aged between 20 and 30 years old, with an average age of 27.5 years. This article analyzes clinical and pathological types and X-ray findings. Young people with lung cancer in the pathological type of undifferentiated carcinoma is the most common, X-ray findings are more common in central lung cancer, X-ray findings without specific signs. Clinically, cough, chest pain, and hemoptysis are the main symptoms.