I have a quarter-sized lipoma on the inner upper rear side of my right calf, just behind my knee cap joint. in the past 6 most , I have developed EXTREME leg pain in my rear claves and rear [sometimes frontal] thighs...during the day and also at night. This ocurrence started virtually from one day to the next without any injury [ I excercise a lot; have all may life; 63 yrs old/female...low cholesteral, etc., and no diabetes/5'6" 135 lbs; trim thin torso and have pain also after exercise[ walk/run 4 miles 4/wk. and have for years, NOT A NEW HABIT. THE PAIN IS DEBILITATING AND i AM NOT A WHINER! 0PINION/PROGNOSIS???