There are three major factors to take into consideration. When patients undergo high-volume liposuction, the body needs time to recover in terms of swelling and what is referred to as fluid shifts. High-volume liposuction typically should not be done within the first few weeks of the first procedure.A second possible concern is excess use of lidocaine if a second procedure is done within the first 24 to 48 hours. The last consideration is performing liposuction in adjacent areas. When one area is treated with liposuction, it responds with the normal healing process.This initially begins with swelling, bruising and early scar formation. This process goes on for many months.When treating an adjacent area, at some point there will be connecting space where one area has previously been treated and another area is a virgin area. The transition from liposuctioning one untreated area of fat to fat that is in the midst of healing can be complicated and difficult. This is the reason we typically do not do secondary liposuction in the same area for a minimum of six months after the first procedure.If your abdomen was treated in the past and you're planning on having your back treated next, then most likely there will be some transition zone between the two. This is something that needs to be not only planned by your plastic surgeon but discussed in person. I suggest talking to your plastic surgeon face-to-face and reviewing a good strategy. Best of luck,Mats Hagstrom, M.D.