Cytoreduction and Intraperitoneal Chemotherapy Versus Systemic Chemotherapy in Colorectal Peritoneal Carcinomatosis

Oxaliplatin 100 mg/ m2 as a 2 h iv infusion + 5-fluorouracil 400 mg/ m2 iv bolus + Isovorin 100 mg/ m2 as a 2 h infusion followed by 5-fluorouracil 2400 mg/ m2 as a 46 h infusion. Each cycle is given every other week until 12 cycles have been administered.

Cytoreductive surgery has the goal of completely resecting all visible tumor tissue in the abdomen. Sequential postoperative intraperitoneal chemotherapy has the purpose of an adjuvant treatment to eradicate microscopic residual tumor and prevent recurrences in the abdomen. The chemotherapy regimen consisted of intraperitoneal 5-fluorouracil 550 mg/ m2 and intravenous isovorin 30 mg/ m2 day 1-6 med cycles every 4-6 weeks. Six cycles were planned.