How can I get rid of a noticeable lump around my belly button area after Liposuction?

Without seeing a photograph it is hard to determine what the exact cause is but here are a few possible suggestions.#1.  Could be an umbilical hernia which was not visible because fat was around the area#2.  A lot of times not enough fat was removed around the umbilical area so it could be retained fat missed#3.  It could be a seroma or fluid collection#4.  It could be loose skin of the upper abdomen which is lying now over the top part of the belly button creating a "frown face" do to the skin folding over the stable belly buttonI would recommend to see your surgeon

Thank you for the question! It is rather difficult to fully evaluate your situation without an in-person exam. That being said, small lumps and other contour irregularities are not uncommon after liposuction.  Shortly after surgery, you may see collections of blood (hematomas) or pockets of fat (fat necrosis). Typically, they will resolve in 2-3 weeks along with most bruising. Keep in mind that you may continue to see lumps as a result of swelling. It will take additional 2-3 months to completely subside.  
Although some physicians recommend massaging these lumpy areas, it's effectiveness is not entirely confirmed. I'd suggest that you give it time and let healing process complete naturally. If your swelling persists months after the procedure or you begin to experience increasing discomfort, you should notify your plastic surgeon. 
Remember that an in-person exam with a board-certified plastic surgeon would be the best way to assess your situation and guarantee an individualized medical advice. Best of luck!