“statistically it's true that those who have biopsies have a greater risk of developing breast cancer. The reason is because a certain percentage of women who have biopsies will end up with the discovery of a 'high risk' condition. That's what increases the risk. So it's not the simple fact that you've had the biopsy that increases the increase; it's the result of the biopsy that increases the risk. Let's say 100 women have biopsies and all start with a risk level of 4%, which is the starting risk level of someone with no other risk factors - basically it's our risk just for being women. The average risk level for that group of 100 women, prior to the biopsies, is 4%. Of those 100 women, 20 are diagnosed with breast cancer. Of the remaining 80 women, 10 are found to have a condition that increases risk, something like atypical ductal hyperplasia or LCIS. The lifetime breast cancer risk level of these 10 women jumps, let's say, from 4% to 20%. Doing the math, this means that the average risk level of the group of 80 women (those not diagnosed with breast cancer) is now 6%. That's why all the websites talk about biopsies increase risk. Overall, on average, they do. But for those whose biopsies showed a totally benign, non-high risk condition (such as standard benign calcifications), the risk level remains 4%.
我也是这么想。上网搜了一下
所有跟帖:
• it's not the simple fact that you've had the biopsy that increas -TBz- ♂ (341 bytes) () 04/29/2018 postreply 20:07:07
• 对,在楼主的网页没看到怎么得出那个结论的。 -Lovenature- ♀ (0 bytes) () 04/29/2018 postreply 20:20:01
• 我的理解:并不是biopsy手术本身增加患癌风险,而是被医生告知要做biopsy的人群比普通人群患癌风险高 -Lilac5- ♀ (0 bytes) () 04/29/2018 postreply 21:33:35
• 医生让俺做, 俺看了另外两个医生, 最后没做, 那个医生讥讥歪歪的 -xiaoxiao2013- ♀ (0 bytes) () 04/29/2018 postreply 21:49:16
• 概率的数学定义是啥, 就是在同等条件下进行比较 -xiaoxiao2013- ♀ (0 bytes) () 04/29/2018 postreply 22:25:28