OUTLINE: This is a double blind, placebo controlled, randomized study. Patients are stratified based on the cumulative anthracycline dose, age at cancer diagnosis, and the duration of time since cessation of anthracycline therapy. Patients are administered enalapril or placebo by mouth bid. Patients undergo a series of cardiac tests after administration of drug. Follow-up occurs at 2, 6, and 12 months and every year thereafter.