<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have a lump on my hand and also one on my breast. Additionally, there is a weird growth on my skin. What could this be?  <response>: Based on your symptoms, it seems like you may have a sebaceous cyst. Its a noncancerous growth that can form in different areas of the body, such as the hand, breast, or skin. 