Ganciclovir by Infusion and by Mouth in Treating Patients With Cytomegalovirus After Donor Bone Marrow Transplant

OBJECTIVES: * To determine the feasibility of using oral ganciclovir (GCV) following induction with intravenous GCV in the setting of cytomegalovirus (CMV) reactivation after bone marrow transplantation. OUTLINE: Blood cultures for cytomegalovirus (CMV) are obtained periodically after the planned bone marrow transplantation (BMT). Patients showing reactivation of CMV receive induction ganciclovir (GCV) IV twice a day on days 1-7. Patients then receive maintenance oral GCV three times a day for 5 weeks in the absence of disease progression or unacceptable toxicity. Patients undergo blood collection periodically during study for pharmacokinetic studies.