What a lovely daughter you are!
You will find that the more you learn about bc, the more you realise what a complex disease it is!
Many different characteristics can deem a bc to be termed aggressive, and as such be treated more aggressively - the type of bc it is, ie IBC, the receptors it has ie ER/PR-, HER2+, or it is TN - these are all aggressive factors. Then we get into the stage and grade, lymph node involvement, vascular invasion...
Generally radiotherapy is not required following mx, nor if less than 1 lymph node is involved - it is not given as with all treatment there is risk of long term damage.
Be assured your mums oncologist will treat her in the most appropriate way.
PS - Bc is a sneaky begger, it can lie dormant for decades only to reappear. And then it all depends on how it reappears and whether it has spread outside the breast or axillia. Sadly, once it escapes the breast or axilliary nodes, then that is what is termed secondary bc, and that is only treatable, not curable...
Good Luck got your mum, Sue xx
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