肺是人体最重要的器官之一,它是由无数个肺泡组成的,很松软,就像一个海绵,可以将气体很轻松地吸进肺泡中,维持人体的正常生理功能。肺癌是肺部最常见的恶性肿瘤。绝大多数的肺癌起源于支气管黏膜上皮。肺癌在恶性肿瘤中的发病率和致死率都是相当高的。在恶性肿瘤死亡率中,无论男性、女性,排在第一位的都是肺癌,这一现象应引起公众的高度警惕。 The lungs are one of the most important organs of the human body. They are made up of countless alveoli, and are soft like a sponge. They absorb the gas easily into the alveoli and maintain the normal physiological functions of the body. Lung cancer is the most common malignancy in the lungs. The vast majority of lung cancer originated in the bronchial mucosal epithelium. The incidence and mortality of lung cancer in malignant tumors are quite high. In the mortality rate of malignant tumors, both men and women ranked first in lung cancer, which should arouse the public's vigilance.