Hello, I am a 23 year old male. I have had a lump under both of my nipples for ten years. At first, I thought it was puberty as it was common for 13 year old boys to get those lumps. However, over time the naive, stupid, and scared teenager I was decided to just ignore them. I have accepted that it is male breast cancer and probably pretty bad. My question is what kind of doctor should I go to. Someone more specific than a general physician. Where do I get started?