何东海同志: 由于目前的科学技术水平所限,在某些特定的生产环境中,人们不可避免地或多或少会接触到一些有害甚至是致癌物质。如果劳动保护设施较差,加之个人忽视自我保护,就有可能诱发肿瘤,称之为职业性肿瘤。例如,石棉所致的肺癌、苯所致的白血病、焦炉工人肺癌、油漆工人膀胱癌等,都是与职业有关,比较常见的职业性肿瘤。据报道,美国国立癌症研究所的专家,对2100例男性膀胱癌患者及3874例对 Comrade Dong Donghai: Due to the current level of science and technology, in some specific production environments, people are inevitably more or less exposed to some harmful or even carcinogenic substances. If poor labor protection facilities, combined with personal neglect of self-protection, it is possible to induce tumors, called occupational tumors. For example, asbestos-induced lung cancer, benzene-induced leukemia, coke oven workers lung cancer, paint workers bladder cancer, are related to occupations, the more common occupational tumors. It is reported that the United States National Cancer Institute experts, 2100 cases of male bladder cancer patients and 3874 cases of