@Blister
A diagnosis can cause a lot of angst internally. Understandably hubby is trying to take the angst out of it, especially since he is a survivor
There's excellent information on the BCNA website, these links talk about your diagnosis
https://www.bcna.org.au/understanding-breast-cancer/what-is-breast-cancer/types-of-breast-cancer/https://www.bcna.org.au/understanding-breast-cancer/what-is-breast-cancer/ductal-carcinoma-in-situ/https://www.bcna.org.au/resource/fact-sheet-breast-cancer-pathology/Best wishes with your upcoming appointment