In reply to cclason:
My wife had what sounds to be, exactly the same type. She doesn't climb, but may I pass on a few things we learnt.
I'm assuming you had some lymph nodes out and have to be careful about lymphoedema. This meant changing the side she slept on. She also now uses poles for walking as extra arm movement.
Keep suncream handy for your chest if wearing a low cut top post radio.
She is on Tamoxifen so has become menopausal. You get hot flushes. Keep a small fan handy and a USB one for work if on a PC. We also now have different Tog duvets on the bed!!
More contentious, but she now uses skimmed goats milk as lower in oestrogen. Whether this works, not sure, but do things which you feel happy with. It's your body.
If we think of anything else, I'll post, but I wish you well.
Chris