My mom also had this problem and
had it removed. She went into surgery for about 45 mins, came out, went home and
that was the end of it. Both my sisters now have breast tissue under their underarms and both hate the way it looks. They both had it checked out and the doc told them it was harmless. One sister though has been complaining that it hurts her when she is close to getting her AF so shes going back to the doc to possibly have it removed.