Most colorectal cancers start as a growth on the inner lining of

來源: youda 於 2020-07-23 16:29:58 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (550 bytes)

1/3 is too small. Please see here:

"Most colorectal cancers start as a growth on the inner lining of the colon or rectum. These growths are called polyps."

https://www.cancer.org/cancer/colon-rectal-cancer/about/what-is-colorectal-cancer.html#:~:text=Most%20colorectal%20cancers%20start%20as,type%20of%20polyp%20it%20is.

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