Littrup P J
Department of Radiology, Wayne State University School of Medicine, Harper Hospital, Detroit, Michigan, USA.
Can J Oncol. 1994 Nov;4 Suppl 1:65-9.
As a significant public health problem, prostate cancer meets nearly all the criteria for screening. While concerns about incomplete natural history, progression rates and need for better prognostic factors are valid, important social and public health issues also need consideration. If future expenditures for terminal cancer care are minimized via reductions in therapy choices or coverage, no economic benefit for prostate cancer screening should exist. Narrowly focused attempts at cost reduction could inappropriately discourage highest risk groups from participating in early detection programs, thereby eliminating the greatest potential benefit of screening. The ACS-NPCDP has demonstrated that early detection of prostate cancer produced distinct stage migration to earlier, more curable disease through optimized use of DRE, TRUS and PSA. PSA is the most objective test and detects tumors of significant biologic potential. Current cost savings are possible with improved public health education about the appropriateness of early detection in the oldest age groups or those with significant pre-existing medical conditions. Prostate cancer control perhaps requires a tailored approach of screening in high risk groups and more appropriate "case finding" in the lower risk general population. The initial combination of PSA and DRE represents an ethical and economical choice for individual patients consulting with informed physicians.
作为一个重大的公共卫生问题,前列腺癌几乎符合筛查的所有标准。虽然对其自然病史不完整、进展率以及更好的预后因素的需求等方面的担忧是合理的,但重要的社会和公共卫生问题也需要考虑。如果通过减少治疗选择或保险范围来尽量减少未来晚期癌症护理的支出,那么前列腺癌筛查就不应存在经济效益。狭隘地专注于成本降低可能会不适当地阻碍最高风险群体参与早期检测项目,从而消除筛查的最大潜在益处。美国癌症协会-国家前列腺癌检测项目(ACS-NPCDP)已证明,通过优化使用直肠指检(DRE)、经直肠超声检查(TRUS)和前列腺特异性抗原(PSA),前列腺癌的早期检测使疾病明显向更早、更可治愈的阶段转移。PSA是最客观的检测方法,能检测出具有显著生物学潜能的肿瘤。通过改善针对最年长者或已有严重基础疾病者早期检测适宜性的公共卫生教育,目前有可能节省成本。前列腺癌的控制可能需要针对高风险群体采取量身定制的筛查方法,并在低风险的普通人群中进行更合适的“病例发现”。PSA和DRE的初始联合对于咨询有见识的医生的个体患者而言,是一种符合伦理且经济的选择。