Regards, Liquid silicone is unsafe, please do not use it ever. The autoimmune response could be triggered by this substance, if you look around on the Internet, you will find patients that have a lot of problems with this product. The inical medical use was only for retine problems. Injecting silicone into the legs represents a quite complex problem from a technical point of view, you should do an MRI STIR as soon as possible to a better evaluation. The consequences could be disastrous and the sequels are sometimes really severe. Injected Triamcinolone (Kenalog) degenerates tissues when it is done repeatedly, so the best option is to look for an specialist to decide if the substance can be removed. In our plastic surgery center, I developed the technique of resection of biopolymers in face, lips, buttocks and lower back through video endoscopy, a surgery performed with minnimal incissions to treat patients with permanent deformities, secundary to biopolymers injections. Please remember to be aware, do not let any permanenrt filler to be injected into your face, breast, buttocks, calfs, genitalia, etc. The safest way to increase buttocks is through your own fat injections or through silicone implants. I hope the information was usefull, have a nice day! Dr Carlos Alberto Ríos.