Hi thanks for your question. You mother in had under gone hysterectomy and during hysterectomy, the surgeon found anther lump, which he removed. This limp most probably could be formed due adhesion between tubes, broad ligament, intestine and omentum (all structures of abdomen) due pelvic inflammatory disease. After such type of abdominal operation postoperative adhesion formation occur leading to partial intestine obstruction, as loops of gut get entrapped in these adhesion .The puling sensation,indigestion,and vomiting all could be due to adhesion obstruction. The entrapment of a loop of intestine in adhesion can become gangrenous (dead) due to compromised blood supply to loop of intestine due to adhesion, that is what probably you mean rotten and passing of hand through. The second surgeon might have done adenolysis and removed the gangrenous portion. Adhesion obstruction after adenolysis surgery is common. I would suggest you to consult a G I surgeon, who may be able to perform the adenolysis again (although very tough job) and separate the gut from adhesion. He may perform the resection anastomsis of the portion which may be having compromised blood supply. Hope this answers your question.