I never did a research on silicone butt injections or even trying to find out. Should I be concerned in the future?

Unfortunately there's not a lot of procedures in the removal of silicone buttock injections.  Silicone granulomas resulting from previous silicone injections may cause chronic infections, chronic pain and discoloration of the skin.  This is a difficult problem to have due to the potential complications that may result from previous injections.  If you're symptomatic then I would recommend having them removed.  You'll likely need an MRI of your buttock to delineate the location and extent of the silicone granulomas of the buttock.  The MRI would serve as a map so that your plastic surgeon would know where to remove them.  Silicone injections from the buttock may be removed either by direct excision versus VASER liposuction.  I would recommend VASER liposuction for removal of the silicone granulomas followed by fat transfer (Salgado, et al.  Liposuction and lipofilling for treatment of symptomatic silicone toxicosis of the gluteal region. Aesthet Surg J. 2014 May 1;34(4):571-7.)  This procedure is a similar procedure when I remove biopolymer/hydrogel from the buttocks.  Good luck and may God bless you.
Emmanuel De La Cruz MD, PLLC
Plastic & Reconstructive Surgeon

YES! Fat injections with liquid silicone is usually done in other countries and not done by board certified plastic surgeons in the US. These injections are not approved by the FDA and it is known that this may cause infection, excess of scarring and deformity in the buttocks.