<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have noticed that I have a lump in my leg and also a mass in my neck. What could be the reason for this?  <response>: Its possible that you have a lipoma, which is a growth of fat cells that forms a lump or mass under the skin. Its usually not harmful or cancerous, but I recommend getting it checked out just to make sure. 