- Chemotherapy: Patients receive gemcitabine hydrochloride over 100 minutes on day 1 and oxaliplatin IV over 2 hours on day 2. Treatment repeats every 2 weeks for 4 courses in the absence of disease progression or unacceptable toxicity. Patients are restaged at day 15-21 of the fourth course of chemotherapy. Patients with nonmetastatic disease proceed to chemoradiotherapy.