I AM A 50 YEAR OLD WOMAN. I HAVE A PAST HISTORY OF LUNG CANCER (17 YEARS AG0). IN THE PAST YEAR OR SO I HAVE FOUND A LARGE ROUND, NON PAINFUL LUMP IN MY LEFT THIGH. I HAVE HAD AN ULTRASOUND AND A MRI WITH NO FIRM RESULTS. REPORTS BOTH SAY MASS OF UNKOWN ORIGIN. DR SAYS TO WAIT AND REPEAT IN 6 MONTHS. BASED ON MY PAST HISTORY, I AM NOT REAL SURE ABOUT THIS. WHAT WOULD YOU DO????????????