The short answer is: as many as it takes to get a great result. In my practice, liposuction is rarely limited to the front of the abdomen, even if that is the source of the primary concern. This is because the abdomen is a cylinder, and treating all of the way around the cylinder (including the flanks, hips and back) can make a dramatic improvement in the waistline and shape as well as getting rid of fat deposits on the front. Because of this approach, it requires a few extra small incisions in the top of the gluteal cleft and in the waistline out towards the side. These are in addition to the small incision hidden in the belly button.Like many things in life, a little extra effort can provide a huge improvement and I'd ask you to consider the value of adding these additional areas.Best,Dr. Pyle