I am a 20 year old healthy female. Every since I can remember I have had a lump on the front of my thigh, right on the muscle. It is small, about the size of a pencil eraser. It is hard and under the skin and the front of my leg indents where the lump is. Over the past few years the indent has been getting bigger and the lump has begun to hurt. My mom told me that ive had it since I was a baby and that i got it after getting a shot. I figured it was scar tissue or something but now its starting to hurt when i put light pressure on it, and sometimes aches when no pressure is applied at all. Has anyone heard of this or know what this is about? I want to see if its something I should be concerned about before seeing my doctor, who lives in another city.