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1973～1980年美国进行了一次乳腺癌普查,通过体检和乳房X线照像术,在美国29个医疗中心检查了283222名自愿参加的妇女。年龄35～74岁,共发现1275例乳腺癌忠者,这些病例多数靠乳房X线照像术检出,其中28.6％病人癌肿块小于1.0cm。1993～1995年对这些病例进行随访,共随访4051(占96％)。其中2658(66％)例仍然存活,死亡1393(34％)例。运用寿命表计算调整生存率(ASR),全部随访的乳腺癌病人ASR为80.5％,而观察生存率(OSR)为61.7％。非浸润型乳腺癌的ASR和OSR分别为97.2％和78.5％。在普查时已发生浸润的乳腺癌患者ASR和OSR分别为78.2％和59.3％。查体时发现肿块的大小和是否有
From 1973 to 1980, a breast cancer survey was conducted in the United States. Through physical examination and mammography, 283,222 volunteer women were examined at 29 medical centers in the United States. Aged 35 to 74 years old, a total of 1275 cases of breast cancer were found. Most of these cases were detected by mammography. Among them, 28.6% of patients had a cancer mass less than 1.0 cm. From 1993 to 1995, these cases were followed up for a total of 4051 (96%). Of these patients, 2658 (66%) were still alive and 1393 (34%) died. Using the life table calculation adjusted survival rate (ASR), the ASR for all follow-up breast cancer patients was 80.5%, and the observed survival rate (OSR) was 61.7%. The ASR and OSR of non-invasive breast cancer were 97.2% and 78.5%, respectively. ASR and OSR in invasive breast cancer patients at the time of the census were 78.2% and 59.3%, respectively. Physical examination found the size of the mass and whether there is