Can anyone help? My 12 year old daughter, who had neuroblastoma as an infant, has a small lump in her right breast. She has not reached puberty yet. Today is Saturday and I plan to talk to the doctor on Monday, but until then, worry, worry, worry. I've read that lumps are common in girls and boys as they start puberty; however, since my daughter has been through cancer once, I am very concerned. Any words of wisom?