Thank you for your question. There is always a risk of forming a poor scar with any injury to the skin. That does not necessarily need to detract you from considering Smartlipo as we use very small incisions. Perhaps, in your case, the placement of them could be chosen to avoid them being conspicuous (hidden by your clothing). I would bring this concern up with your surgeon. Best wishes.
The incisions for SmartLipo are extremely small. So small I don't even stitch them. That said, a true keloid will grow beyond the bounds of the scar and could be a problem. However, I would want to know more detail about your keloid history, and whether they were true keloids. Many people use the term keloid too loosely (including doctors). Most "keloids" are not keloids at all, but rather hypertrophic scars. Most people have seen hypertrophic scars: They are fairly common, and are thick, firm, often red or purple scars. They don't grow beyond the immediate area of the scar. There are many things we can do with them, including steroid injections, lasering, surgical removal. They tend to improve reliably with these techniques whereas keloids can come back and can need even more aggressive treatments.