前列腺特异性抗原密度作为前列腺癌查磁共振成像之前的选择工具:来自STHLM3MRI随机临床试验的分析
Lars Björnebo1, Andrea Discacciati1, Ahmad Abbadi1
1Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
European urology focus
|July 30, 2025
概括
在MRI前使用前列腺特异性抗原密度 (PSAD) 显著减少不必要的活检和低度前列腺癌的过度诊断. 建议PSAD截止值为0.075 ng/ml2,以平衡癌症检测与资源效率.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 在瘤学瘤学.
- 放射学 放射学是一门学科.
背景情况:
- 前列腺癌查面临过度检测,过度治疗和高资源利用的挑战.
- 前列腺特异性抗原密度 (PSAD) 与临床显著的前列腺癌的相关性比单独PSA更强.
- 优化磁共振成像 (MRI) 选择对于有效的前列腺癌查至关重要.
研究的目的:
- 为了比较使用各种PSAD切断的结果,选择男性进行前列腺癌查中的MRI.
- 评估PSAD值对检测临床显著前列腺癌的影响 (格里森≥3+4).
- 评估PSAD切断对减少MRI扫描和活检的影响,从而降低资源使用和过度诊断.
主要方法:
- 该STHLM3MRI试验涉及49118名受邀男性,其中12750人接受了查.
- 在实验组中,PSA ≥3 ng/ml的男性接受了MRI;阳性PI-RADS得分 (≥3) 导致了活检.
- 评估PSAD截止值为0.075,0.10,0.125和0.15 ng/ml2,用MRI或超声波测量前列腺体积.
主要成果:
- 一个PSAD切断值为0.075 ng/ml2减少了格里森6癌症检测17%和MRI使用28%.
- 这个切线错过了5%的格里森≥3+4癌症病例,对格里森≥4+3检测没有影响.
- 较高的PSAD值进一步降低了格里森6检测和MRI使用,但也降低了格里森≥3+4癌症的检测.
结论:
- 在MRI之前使用PSAD有效降低了过度诊断和资源消耗,同时保持了显著前列腺癌的检测.
- 不建议PSAD切断值超过0.075 ng/ml2,因为缺失格里森≥3+4个癌症病例的风险增加.
- 以PSAD为指导的MRI选择为前列腺癌查提供了更有效的方法,平衡检测率与医疗保健资源管理.
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