Burhenne L J, Burhenne H J, Kan L
Department of Radiology, University of British Columbia, Vancouver General Hospital, Canada.
Radiology. 1995 Jan;194(1):185-8. doi: 10.1148/radiology.194.1.7997549.
To demonstrate the ability of a mass mammography screening program to provide consistently high-quality mammography screening, while at the same time sustain a large volume of patients to keep the cost of mammography low.
A public-funded, mass mammography screening program, begun in 1988, is currently being conducted in five Canadian provinces. For the Screening Mammography Program of British Columbia, complete follow-up data are available for the first 57 months of operation. During that time, the program expanded from one center with five radiologist screeners to 14 centers with 30 radiologist screeners. There were 201,937 examinations performed on 128,325 women, 35% of whom were younger than 50 years.
There were 802 cancers detected at an overall rate of 6.2 per 1,000 women (2.8 per 1,000 in women younger than 50 years and 8.1 per 1,000 in women older than 50 years). In the women younger than 50 years, 90 (72%) of the cancers were stage 0 or stage I, and the axillary lymph nodes were involved in 14 (11%). In the women 50 years or older, 496 (73%) of the cancers were stage 0 or stage 1, and the axillary lymph nodes were involved in 97 (14%).
If quality is carefully controlled, the results of a mass screening program can be either maintained or improved. For both age groups, the prognostic characteristics are similar.
证明大规模乳腺钼靶筛查项目能够持续提供高质量的乳腺钼靶筛查，同时维持大量患者数量以降低乳腺钼靶检查成本。
一项由公共资金资助的大规模乳腺钼靶筛查项目于1988年启动，目前正在加拿大的五个省份开展。对于不列颠哥伦比亚省的乳腺钼靶筛查项目，可获取运营头57个月的完整随访数据。在此期间，该项目从一个拥有5名放射科筛查医生的中心扩展到14个拥有30名放射科筛查医生的中心。共对128,325名女性进行了201,937次检查，其中35%的女性年龄小于50岁。
共检测出802例癌症，总体检出率为每1000名女性中有6.2例（年龄小于50岁的女性中每1000名有2.8例，年龄大于50岁的女性中每1000名有8.1例）。在年龄小于50岁的女性中，90例（72%）癌症为0期或I期，14例（11%）腋窝淋巴结受累。在年龄50岁及以上的女性中，496例（73%）癌症为0期或I期，97例（14%）腋窝淋巴结受累。
如果质量得到严格控制，大规模筛查项目的结果可以维持或改善。两个年龄组的预后特征相似。
