Peritoneal carcinomatosis is considered a terminal stage of tumor progression. Cytoreductive surgery plus aggressive combination intraperitoneal chemotherapy may significantly alter the natural history of this disease. This study will define the maximum tolerated dose of paclitaxel and 5-fluorouracil (5-FU) given as an early post-operative intraperitoneal (IP) dwell therapy after cytoreductive surgery and continuous hyperthermic peritoneal perfusion with cisplatin (CHPP).