OUTLINE: This is a randomized, double-blind, placebo-controlled study. Patients are stratified according to gender, smoking status (current vs former), and morphometric index (no greater than 3.4 vs greater than 3.4). Patients are randomized into one of two treatment arms. Arm I: Patients receive inhaled budesonide twice daily. Arm II: Patients receive an inhaled placebo twice daily. Treatment continues for 6 months in the absence of disease progression or unacceptable toxicity. Patients are followed at 7 months and 12 months.