Patients previous enrolled in protocol 99-C-0094 who improved with voriconazole treatment are eligible for this study. Before beginning treatment, patients will have a physical examination, including blood and urine tests, and an eye examination. They may also have X-ray or CT imaging. Voriconazole will then be given twice a day either by infusion into a vein or by tablets taken by mouth for up to 12 weeks. Patients will be examined at weeks 4, 8 and 12 of the study and one week after treatment stops. Blood and urine samples will be collected at each visit. An eye examination will be done at the end of the treatment period and at other visits if vision problems develop.