Surgery and Oxaliplatin or Mitomycin C in Treating Patients With Tumors of the Appendix

This randomized phase II trial is studying the side effects and how well giving oxaliplatin or mitomycin C directly into the abdomen after surgery works in treating patients with tumors of the appendix. Drugs used in chemotherapy, such as oxaliplatin and mitomycin C, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Heating a chemotherapy solution and infusing it directly into the abdomen may kill more tumor cells. Giving these treatments after surgery may kill any tumor cells that remain after surgery.