OUTLINE: Patients are randomized to 1 of 2 treatment arms. ARM A: Patients receive oral megestrol acetate 1-2 times (10 mg/kg dose if once daily or 5 mg/kg dose if twice daily) daily for 4 weeks. ARM B (control): Patients are observed for weight loss and gain for 4 weeks. After completion of study treatment, patients are followed up for 12 weeks.