- Group 2 (more than 2 prior courses of oxaliplatin): Patients receive HAI therapy as in group 1. Patients also receive irinotecan hydrochloride IV over 30 minutes and leucovorin calcium IV over 30 minutes on days 1 and 15 and fluorouracil IV continuously over 48 hours on days 1, 2, 15, and 16. Courses repeat every 4 weeks in the absence of disease progression or unacceptable toxicity.