I have had a lump on my right thigh for over a month. The past few weeks it has grown larger. An ultrasound showed no signs of a blood clot. An MRI showed no signs of either a mass in the skin, fatty tissue, muscle, or bone. However, lump can be felt and pain persists. Have not had any kind of injuries either from sports or heavy lifting, nor any kind of accidents. Am a non-smoker, non-drinker, 5'7", 155lbs, with no other health issues. What else can I look into in order to get to the bottom of this continuing pain in my leg? What makes it worse is that the pain is only in my right thigh. Your comments are appreciated..