- Group 1 (no more than 2 prior courses of oxaliplatin): Patients receive hepatic arterial infusion (HAI) therapy comprising floxuridine and dexamethasone continuously on days 1-14. Patients also receive oxaliplatin IV over 2 hours and irinotecan hydrochloride IV over 30 minutes on days 1 and 15. Courses repeat every 4 weeks in the absence of disease progression or unacceptable toxicity.