You're misinterpreting the "when not if" adage. For prostate cancer it's generally used as an example of how there are cancers you die of and cancers you die wi

You're misinterpreting the "when not if" adage. For prostate cancer it's generally used as an example of how there are cancers you die of and cancers you die with. Many prostate cancers are so nonaggressive that men will die with them and never know they were there. And that's the problem. If you did a test and saw something & then immediately eradicated that prostate cancer, what if it was going to be one of the ones that wouldn't have caused you real harm during your natural life? In that case the likelihood of the treatment causing more damage to you than the cancer itself is high. And predicting which are which is improving but still imperfect.