Hi, I have a golf ball sized lump next to my ankle bone (behind) on both legs. There is no pain or tenderness. I have had many tests from 5 different doctors. I have had xrays, checked my heart, veins, bones - no diagnosis.....help!!! I am 67 yrs. old, 5'4" tall, weigh 160 lbs, good health. I am not on any medication.