Lisa,
My modified neck dissection on the right was for levels 1,2 and 3. I was 45 when it was done and had no problems post op other than a weak shoulder from favoring that side. It would bother me enough every once in a while that I took pain meds and the day off from work, but come to think of it, that was when I moved my daughter off to college and while the ache was real in my shoulder, the one in my heart is probably what kept me home!
Sincerely,
Lisa