Hello Cute36445, Thank you for your question about permanent fillers leaving hard bumps all over your butt and now in your thighs and how this can be removed without a big incision. Your question cannot be answered without pictures and/or a consultation. Permanent fillers like silicone, biopolymers, PMMA, Los Deline, and paraffin do migrate. Permanent products like these have been known to migrate from the buttocks down the thighs, over the hips, into the genitalia, down the thighs, into the knees, calves, ankles, and even toes. Silicone products can also spread upwards to between the shoulder blades. It would be best to schedule consultations with as many experienced plastic surgeons as possible for the removal of your permanent filler. You will also need an MRI to determine the location and amount of your permanent fillers. To obtain an accurate assessment of what exactly you need, schedule a free virtual consultation. Most plastic surgeons offer free virtual consultations. Good luck. Since removing silicone is a big procedure, please seek an experienced, board-certified plastic surgeon who has significant experience with silicone removal. Do your research. Make sure they have performed many silicone removal surgeries and have the before-and-after pictures to prove it. Carefully examine their before-and-after pictures and check their reviews on RealSelf. If you cannot find an experienced silicone-removal surgeon in your neighborhood, consider traveling out of state if you must. Sincerely, Dr. Katzen, MD, MBA (Plastic Surgeon, President of the American Society of Bariatric Surgeons, Certified by the American Board of Plastic Surgery, Fellow of the International Society of Aesthetic Plastic Surgery, American College of Surgery, and International College of Surgery and member of the American Society of Plastic Surgery, American Academy of Cosmetic Surgery, Director and chief clinical investigator at the Institute of Silicone Removal, RealSelf Hall of Fame, and RealSelf Doctor Advisory Board for Medical Review and Consumer Panel, Director and Chief Investigator of Silicone Removal Institute.)