PRIOR CONCURRENT THERAPY: Biologic therapy: No prior chimeric antibody or kinase inhibitor for recurrent or metastatic disease No more than 1 prior biotherapy regimen for recurrent or metastatic disease Chemotherapy: At least 3 months since prior induction or adjuvant chemotherapy concurrent with radiotherapy No prior chemotherapy for recurrent disease Endocrine therapy: Not specified Radiotherapy: See Disease Characteristics At least 4 weeks since prior radiotherapy Surgery: See Disease Characteristics Recovered from prior major surgery