I'm waiting on a mammogram right now to see if my breast lump is suspicious. Waiting sucks, lol. But, I started wondering. My doc. told me that my lump could be a lymph node. He also asked if it hurt and I said no. I asked him if that was a cause for concern because I had heard that swollen painless lymph nodes always mean cancer. He said that there are many other reasons for lymph nodes to swell but not hurt. I'm just curious as to what the other causes could be. I have fibrocystic breasts and am 23 years old. I always though infected lymph nodes would hurt. Can an infected node be painless? What can the nodes swell with other than cancer and infection? Thanks for answers. Good luck and hugs to everyone.