肺腺癌是肺癌的四大组织类型之一,常见于40岁以下人群,不吸烟者和妇女,占全部肺癌的15～25%,发病率仅次于鳞癌。虽然腺癌好发于肺脏周围的实质内,手术切除率高达70%以上,但血行或淋巴转移发生较早,故术后复发率高,生存率较低。肺癌是目前世界上许多国家最常见的恶性肿瘤,常常导致病人短期内死亡。特别在欧美工业发达国家,发病率和死亡率都很高。我国肺癌死亡率在肿瘤分类中按性别区分, Lung adenocarcinoma is one of the four major tissue types of lung cancer. It is common in people under the age of 40, non-smokers and women, accounting for 15 to 25% of all lung cancers. The incidence rate is second only to squamous cell carcinoma. Although adenocarcinoma occurs in the parenchyma around the lung, the surgical resection rate is as high as 70%, but blood or lymphatic metastasis occurs earlier, so the recurrence rate is high and the survival rate is low. Lung cancer is the most common malignancy in many countries in the world. It often leads to short-term death. Especially in industrialized countries in Europe and America, the incidence and mortality are high. The mortality of lung cancer in China is divided by gender in tumor classification.