肺癌是最常见的恶性肿瘤,已成为人类因癌症死亡的主要原因之一。在肺癌治疗前明确肿瘤的类型十分重要,因为它和患者的个性化治疗密切相关,并能为肿瘤的流行病学及生物学研究提供基础。目前,肺癌按病理 Lung cancer is the most common malignancy and has become one of the major causes of death from cancer in humans. It is important to define the type of tumor before the treatment of lung cancer because it is closely related to the individualized treatment of the patient and provides a basis for the study of the epidemiology and biology of the tumor. At present, lung cancer by pathology