OBJECTIVES: I. Compare the efficacy, safety, and toleration of voriconazole versus amphotericin B (CAB) in the treatment of acute invasive aspergillosis in immunocompromised patients. II. Compare the efficacy, safety, and toleration of voriconazole versus CAB followed by other antifungal therapy in the treatment of acute invasive aspergillosis in immunocompromised patients. III. Compare survival in patients treated with voriconazole versus CAB with or without other antifungal therapy. IV. Investigate resource utilization in patients treated with voriconazole versus CAB with or without other antifungal therapy.