- Neoadjuvant chemotherapy: Patients receive pemetrexed disodium IV over 10 minutes and cisplatin IV over 2 hours on day 1. Treatment repeats every 3 weeks for up to 3 courses in the absence of disease progression or unacceptable toxicity. Patients are evaluated 3 weeks after completion of neoadjuvant chemotherapy. Patients without disease progression proceed to surgery.