HI @Melc503,
It's probably because of the node involvement. It's a mop of any small nasties that may have been missed and are not big enough yet for the scan machines to pick up.
I felt exactly the same as youl. I kicked and screamed and questioned everything about it. I very, very nearly said no.
Then I re read my pathology and saw all those lovely little words, like "highly invasive, possibly metastatic" and a dozen other things I can't remember now. I remembered that pee your pants feeling of complete fear at diagnosis. I never ever want to feel that again knowing I hadn't done everything recommended. So off I marched to chemo and rads.
I had lumpectomy (hence, the rads), full aux clearance 5/24 nodes involved. The stinky thing was busting out of the nodes and invading the tissue around it as well.
Chemo sux but you may not get horribly ill. Everyone reacts differently, I had ACT chemo, AC is a bit average to say the least but I managed to work, help my hubby run the farm, did all my usual stuff, went out, organised parties etc etc. The taxol was a lot easier and I hardly had any side effects. I kept my hair with the cold cap as well.
I had next to problems with rads ,( had 30 rounds) my skin held up until about number 22 then healed up fast once I was finished. I had no fatigue and the biggest hassle was driving there every day.
At the end of the day, it's your choice and your feelings are completely understandable. I am sure most of us felt the same way at the start.
xoxoxox