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肺癌的发生史包含三个时期:(1)正常细胞在一定程度上的非典型化,这要经历若干年月,可从痰的细胞学检查发现;(2)从进行性的细胞非典型化,经过不同的时期,发展为原位癌;(3)肿瘤进展到最后阶段,临床上出现局部的或全身的症状与体征。所谓早期诊断的研究,应致力于肺痛在原位癌时的确诊,但这在目前还远远不能做到。根据国内外的报导,现在初次就诊或新诊断出的病人。约80%已进入中、晚期,不能施行外科根治手术,5年生存率尚不足10%。
The history of the development of lung cancer includes three periods: (1) the normalization of normal cells to a certain degree, which takes several years and months, and can be found from the cytological examination of sputum; (2) from the progressive cell atypicalization After a different period of time, it develops carcinoma in situ; (3) When the tumor progresses to the final stage, local or systemic symptoms and signs appear clinically. The so-called early diagnosis research should be devoted to the diagnosis of pulmonary pain in situ cancer, but this is still far from being achieved. According to reports from home and abroad, patients who are newly treated or newly diagnosed are now. About 80% have entered the middle and late stages and can not undergo surgical radical surgery. The 5-year survival rate is still less than 10%.