I had 24 lymph nodes taken and one lymph node was positive. I would certainly want to know if it had spread to the lymph nodes. And some women do have problems with lymphedema. Their arm will swell, they have difficulty getting back full mobility of their arm. I've been fortunate. I have full us of my arm. I've never had any problems at all, but there are lots of remedies for that. There are exercises that you can do. In fact, I've been told that any woman whose had a mastectomy, there exercises that you should be doing all the time. My personal feeling is that any difficulty that I might experience with my arm would certainly be worth coping with, to know whether it was in the lymph system or not.