My first thougths, according to your discription, is adhesions in the insision area. Next, have they taken any x-rays to eliminate the possiblity of (gulp!
) any thing left in the abdominal area? This of course would be the worse case senario, but covering all the bases never hurts either. If that has been done, some acupunture or reflexology for the area would be an option as Dragonflies said. Next perhaps some skin rolling and gently working on the adhesions may be helpful, but could be some what painful also. Energy work such as Reiki or Polarity may be an option too. Perhaps some one else has some thoughts?
"Anyone who proposes to do good must not expect people to roll stones out of his way.
But must accept his lot calmly if they even roll a few more upon it." Albert Schweitzer