论文部分内容阅读
原发性支气管肺癌,简称肺癌,是指起源于支气管粘膜或腺体的癌症。肺癌是当今世界上对人类健康与生命危害最大的恶性肿瘤之一,发病率居全部肿瘤的第一位,且有逐年增高的趋势。肺癌的发病年龄多在40岁以上,男性发病率高于女性,肺癌的5年生存率约为8-13%。一、病因1.吸烟。吸烟是公认的肺癌危险因素。烟雾中含20多种致癌物(苯并芘)。吸烟者肺癌发生率比非吸烟者高10-20倍,死亡率高10-30倍(被动
Primary bronchial lung cancer, referred to as lung cancer, refers to cancer originating in the bronchial mucosa or gland. Lung cancer is one of the most malignant tumors in human health and life in the world today. The incidence of all cancers is the highest among all the cancers and there is a trend of increasing year by year. The incidence of lung cancer more than 40 years of age, the incidence of men than women, 5-year lung cancer survival rate of about 8-13%. First, the cause of 1. Smoking. Smoking is a recognized risk factor for lung cancer. Smoke contains more than 20 kinds of carcinogens (benzopyrene). Smokers have 10-20 times more lung cancer than non-smokers and 10-30 times more likely to die (passive)