DISEASE CHARACTERISTICS: Patient immunocompromised as the result of any of the following: Allogeneic bone marrow/peripheral stem cell transplant Autologous bone marrow/peripheral stem cell transplant Hematological malignancy (including lymphoma) Aplastic anemia and myelodysplastic syndromes (currently on immunosuppressive treatment) Solid organ transplantation (other than lung) Other solid organ malignancy (after cytotoxic chemotherapy) HIV/AIDS High dose prolonged corticosteroid therapy (at least 20 mg/day of prednisolone or equivalent for more than 3 weeks) or prolonged therapy with other immunosuppressive agents (e.g., azathioprine, methotrexate) Diagnosis of either definite or probable acute invasive aspergillosis Fungal infection represents a new episode of acute invasive aspergillosis Patients with the following are ineligible: Aspergilloma or allergic bronchopulmonary aspergillosis Chronic invasive aspergillosis Sarcoidosis CMV pneumonia