Bulge on top of my stomach 2 years after TT. Is it the sutures? (Photo)

It is possible that your muscle tightening of the upper abdomen has come loose. This is very uncommon this fat out from surgery, but it can be retightened.

An in person evaluation is always best but from your photos and description the likely cause of the area that concerns you is abdominal wall laxity. In order to correct this a tummy tuck revision would be needed in order to suture the upper abdomen. No further skin excision appears necessary.

In general, it appears as though there is residual or recurrent fascial laxity following prior abdominoplasty.During traditional abdominoplasty, the skin of the abdomen is lifted up to the xiphoid process approximately. The fascia is then repaired in the midline in 2 layers. This means that the layer over the muscle is tightening and sutured. It appears as though the fascia is tighter in the region below the navel than above the navel. To my knowledge, the only way to repair this is to revise the suture plication. This involves lifting the skin from the rectus fascia and repairing the laxity. Good luck in your upcoming revision.