Fat pad on lower back (Photo)

It would be best for you to see your surgeon to determine if this is swelling or fat.  If you press on the area and it indents significantly, it could be swelling.  If this truly is an area of fat, you would need liposuction to remove it.

I suggest seeing your physician for an evaluation.  This is likely swelling, but if it is fat then it can be liposuctioned.  Best, Dr. Emer.

It's hard to give you a definite answer without seeing you, but it could be swelling from the fluid that was put in prior to your liposuction for numbing and vasoconstriction.  

 Most likely the area simply swollen. During the liposuction procedure, Even if the actual suctioning was nowhere near the back, the surgeon typically will inject a tremendous amount of fluid prior to liposuction. This fluid often contains medication to numb the area as well as to decrease bleeding and bruising. So, not only is this fluid often hanging around in the tissues, the actual mechanism of liposuction is traumatic to the tissues and cause a tremendous amount of swelling in itself.   So, I imagine you are lying on your back for prolonged times after surgery, to avoid putting pressure on the tender abdomen and flanks. Meanwhile, all of this fluid seeping around your tissues, acting like a sponge, and the fluid finds its way to the most dependent place:The sacrum. This is the most likely explanation. Definitely talk with your plastic surgeon and get examined.  Otherwise, massage the area, decrease your salt intake, and consider switching to spanx or some kind of lower body girdle which will put pressure on the sacrum. If you cannot find one that put enough pressure on the sacrum, try adding a folded up pad or such to put extra pressure on the sacral area to force that fluid away. Of course, do all this with the blessing of your Surgeon. Good luck!Dr. Subbio

If that mound was not present prior to your treatment fat is not going to emerge as a consequence. Positioning for a prolonged period can create swelling. The area should feel firmer under the circumstance.

Thank you for your question and for sharing your photographs.  I can see your area of concern, and if this area had not been present prior to surgery, it is likely swelling that occurred and should resolve spontaneously as your body heals.  Depending on your positioning in the operating room your body may have preferentially placed this extra fluid along your low back. For reassurance, I would voice your concerns to your surgeon so that they can confirm that this area is the result of tissue swelling, and not a fatty deposit, or discrete fluid collection.    

It's not possible to develop or grow fat in a certain area from having liposuction in other areas.This could represent either swelling from your procedure which is showing itself on the lower back.When someone has liposuction in certain areas the untreated adjacent areas can sometimes look fuller.swelling tends to follow gravity so often area below the areas treated will show swelling and or bruising.The amount of time since your procedure and the areas treated would having a big impact on trying to explain what this represents.I suggest you follow up with your plastic surgeon.Best,Mats Hagstrom M.D.