<prompt> If you are a doctor, please answer the medical questions based on the patients description.Im a 25 year old male and Ive had this lump thing under my right nipple. It is kinda sensitive to touch and a little sore. Ive had it for well over a month now. Im not really sure if its changed in size and i dont want to go in because i dont have insurance. What do i do?  <response>: Hello! Welcome to Chat Doctor. This looks like a fibroadenoma from history, a benign tumor. You havent mentioned its mobilityconsistency, fever? This can also be fibroadenomas. If you are lactating unlikely at 25, then it can be galactose i.e. milk cyst due to obstruction of milk ducts. Local examination is necessary in my clinic, I also advise FNAC - fine needle aspiration cytology to confirm diagnosis. Treatment is done accordingly. Hope this information is useful. Wish you a good health. Thanks. Regards. 