我也是這麽想。上網搜了一下

來源: Lovenature 2018-04-29 19:05:55 [] [舊帖] [給我悄悄話] 本文已被閱讀: 次 (1596 bytes)
回答: 不穿刺怎麽確定,等死?老子說兩句2018-04-29 18:01:40

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%.

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it's not the simple fact that you've had the biopsy that increas -TBz- 給 TBz 發送悄悄話 TBz 的博客首頁 (341 bytes) () 04/29/2018 postreply 20:07:07

對,在樓主的網頁沒看到怎麽得出那個結論的。 -Lovenature- 給 Lovenature 發送悄悄話 (0 bytes) () 04/29/2018 postreply 20:20:01

我的理解:並不是biopsy手術本身增加患癌風險,而是被醫生告知要做biopsy的人群比普通人群患癌風險高 -Lilac5- 給 Lilac5 發送悄悄話 (0 bytes) () 04/29/2018 postreply 21:33:35

醫生讓俺做, 俺看了另外兩個醫生, 最後沒做, 那個醫生譏譏歪歪的 -xiaoxiao2013- 給 xiaoxiao2013 發送悄悄話 (0 bytes) () 04/29/2018 postreply 21:49:16

概率的數學定義是啥, 就是在同等條件下進行比較 -xiaoxiao2013- 給 xiaoxiao2013 發送悄悄話 (0 bytes) () 04/29/2018 postreply 22:25:28

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