OUTLINE: This is a randomized, multicenter study. Patients are randomized to one of two treatment arms. Arm I: Patients receive oral vinorelbine weekly. Arm II: Patients receive vinorelbine IV over 10 minutes weekly. Treatment continues in the absence of disease progression or unacceptable toxicity. Quality of life is assessed several times during treatment and 4 weeks after treatment. Patients are followed every 3 months for 1 year.