I am a 14 year old male, and I have just discovered a small, pea sized lump under my left nipple. I have done research and it could be either breast cancer, a blocked duct under my nipple or Gynecomastia . It is painful to touch, but I doubt its cancer, as it is the only symptom of it, and it says there should be numerous, not just one. I know I should see a doctor, and I have a routine physical next week were I will bring it up. My dad is a dentist, and thereforing going through medical school, he says it its nothing, just something that happens during puberty. If it is Gynecomastia, however, does it need treatment or should I just leave it?
Thank you for any help