Hi @Maxiash - so sorry to see you join our little group xx. The position of yours sounds very similar to mine! 12 o'clock and Under the nipple, where mine was. Being slow growing - was it ILC (Invasive Lobular Cancer?)
Your ongoing treatment also mimics mine too ... tho, with my Onc's permission, I extended my Endocrine treatment for another 2 years - as most data now does not support early BC having 10 years of AIs.
I had hardly any side effects with the radiation & tho I DID have some aches & pains with the AIs, I was able to change medications til I found one that suited me & have successfully stayed on the 3rd one for the last 6 years. The one that suited me the best was Anastrozole, like yours.
Before I started my radiation, I was given the chance of doing a trial WITHOUT radiation over a period of years (to compare with others who DID have radiation)... but I declined. I preferred the extra insurance that the radiation gave me, as ILC can still be aggressive, even tho slow growing. It does have a recurrence rate that is a lot 'later' than most other forms of BC too - often in excess of 10-15 years.
Do you have a link to the Study that you've mentioned? It would make interesting reading!
A girlfriend had ongoing issues with her lungs following her BC surgery & after chemo and radiation (nearly 15 years ago) ... If it was your right breast that had the surgery - The Rad Onc will give you specific breathing techniques to separate your internal organs from 'overflow' rays. As yours was close to the nipple, like mine - ask the Radiation Oncologist about possibly being in the 'prone' position for yours. ..... Mine was (and i've always been a size 34 - so not really 'ample' breast sized.
So instead of being 'face up' for the Rads, I was 'face down' and my boob was hanging thru a hole in the table. It meant the table had to be lifted quite high up, to enable the machine to get underneath, to deliver the treatment.
take care & all the best for your rads & AIs