I had the same question about the nodes... I was told that they just take the first nodes that 'light up' from the radioactive dye that are closest to the breast b/c that is where the cancer always goes first. I was also told that there is no benefit to taking more nodes b/c its just additional surgery with more complications (possible lympedema) and wont change the treatment plan. Years ago they used to take lots of node but I guess the current treatments now they dont need to do that because they found it doesnt help the cancer recurrence but does cause a lot of lymphedema