PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: At least 3 weeks since prior chemotherapy and recovered No more than 1 prior chemotherapy regimen No prior vinorelbine Endocrine therapy: Not specified Radiotherapy: Recovered from any prior radiotherapy No prior radiotherapy to more than 10% of bone marrow Surgery: At least 2 weeks since prior major surgery and recovered Other: At least 30 days since prior experimental therapy