Hi @NotHappyJan
This link really explains it very well.
https://www.cancer.org/treatment/understanding-your-diagnosis/tests/understanding-your-pathology-report/breast-pathology/breast-cancer-pathology.htmlMost chemo regimes go anywhere between 4 and 6 months. Because of the grade is why chemo offered.
If it comes back her2+ then you would also be offered a targeted therapy which goes on for a further 9 months. Most people with Es positive cancers go on to hormone suppressant therapy also.
The sizing I'm unsure if it related to the dcis or the idc or the combined.
This link also helps with understanding the different types of breast cancer.
https://www.bcna.org.au/understanding-breast-cancer/types-of-breast-cancer/You'll need a closer look at your pathology to understand it better.
