Is there complications that come with having a lot of scar tissue
I presume you mean internal scar tissue from previous abdominal procedures? It can make the dissection more difficult but should not necessarily effect the result. Some abdominal procedures can alter the blood supply of the flap so you have to be careful. Also, previous liposuction, particularly laser assisted liposuction, can create intense internal scarring. The more important question is how your skin scars. If you are prone to keloid or hypertrophic scarring, an abdominoplasty will certainly bring this out.