- Arm I (neoadjuvant chemotherapy): Patients receive gemcitabine hydrochloride IV over 30 minutes and cisplatin IV over 30 minutes on days 1 and 15. Treatment repeats every 4 weeks for up to 4 courses in the absence of disease recurrence or unacceptable toxicity. Within 8 weeks after initiating course 4 of chemotherapy, patients undergo complete surgical resection.