Contouring more important an issue than weight loss for the tummy tuck and liposuction
Even with the information that you provided, there is no way of knowing how much weight you will ultimately lose as a result of your tummy tuck and liposuction. Despite removal of 7 liters of fat, some of this was fluid that was injected in order to perform the liposuction, so an estimate here may be very inaccurate. Furthermore, if the skin and fat removed from the tummy tuck wasn't weighed, this is even less information.
Remember as the other plastic surgeon respondents stated,...