I think that pouch is what she meant by lumps. I have above and below as if the surgeon kindly split my fat in two for me
BTW ... I hate sit-ups. I do almost anything rather than that!
My surgeon explained to me that they are more careful now (for me this was 23, 21 and 19 years ago) but at the time, they were becoming more aware of splitting muscle fibres rather than slicing through indiscriminately. This leaves the muscle stronger, in theory.
Now, I just went to look at an anatomical drawing of the musculature of the lower abdomen and I can't quite figure that out .... however. If I lay on my back and do a crunch, I can find all the muscles that are supposed to be there and they seem intact. They're just covered in fat.
You can always ask your doctor if there's any reason why your scarring might cause a problem.