Hello, thank you for your questions regarding the migration of silicone into your thighs after buttock silicone injection. The short answer is “yes, silicon can migrate from your butt to your thighs.” I specialize in silicone removal. I’ve seen many cases were silicone from the butt migrates from the butt into the thighs and legs. This can be shown on ultrasounds and MRIs. Basically, people should not have silicone injected anywhere in the body. However, if you do have silicone injected, I would suggest it be removed before the silicone starts causing problems. Silicone injection problems include localized pain, skin irritation, permanent skin changes resulting in redness, creation of significant scar tissue, the conversion of scar tissue into granulomas, and sometimes the conversion of granulomas into certain cancers. Bottom line: do not do silicone injections. If you have silicone in your body and it’s causing problems, have the silicone removed. Typically, silicone can be removed in two ways. First, the silicone can be removed with ultrasonic guided VASER liposuction, Second, the silicone can be removed with direct surgical excision. This is not an easy surgery; please seek an expert. Travel out-of-state if you must. If you have any more questions regarding silicone injections and the removal of silicone from the butt or thighs, please contact my office. Sincerely, Dr. Katzen. (Certified by the American Board of Plastic Surgery and member of the American Society of Plastic Surgery.)