Summary:A 52-year-old male with severe gastrointestinal graft-versus-host disease (GVHD), developed dyspnea and irreversible airflow obstruction, 11 weeks post-allogeneic bone marrow stem cell transplantation. Based on the clinical picture and presence of 'mosaic attenuation' pattern on chest high-resolution computerized tomography (HRCT), he was presumed to have bone marrow transplantation-related bronchiolitis obliterans. Postmortem examination revealed invasive airway aspergillosis with no evidence of bronchiolitis obliterans.Bone Marrow Transplantation (2002) 29, 711-713. DOI: 10.1038/sj/bmt/1703553 Keywords: airway obstruction; aspergillus; bronchiolitis obliterans; bone marrow transplantation; graft-versushost disease Allogeneic bone marrow transplantation (BMT) has been consistently associated with a high incidence of pulmonary complications, such as opportunistic infections, toxic effects of chemoradiotherapy, and inflammatory lesions associated with graft-versus-host disease (GVHD). About 15% of patients after allogeneic BMT develop post-BMT bronchiolitis obliterans. 1 We present a patient in whom invasive airway aspergillosis was manifested by severe irreversible obstructive airway disease, mimicking post-BMT bronchiolitis obliterans.
Case reportA 52-year-old male with chronic myelogenous leukemia underwent allogeneic peripheral blood stem cell transplantation from his major histocompatibility complex (MHC) identical sister, during second chronic phase after a lymphoblastic crisis. Routine pulmonary evaluation prior to transplantation included normal high resolution com- puterized tomography (HRCT) of the chest, with normal spirometry and lung volumes and a mildly decreased carbon monoxide transfer factor (TL CO ) (70%).Conditioning prior to allogeneic BMT consisted of oral busulfan 4 mg/kg p.o. in divided doses daily for 3 days (total dose 12 mg/kg), with intrathecal methotrexate (12.5 mg) and Ara-C (50 mg), followed by infusion of allogeneic peripheral blood stem cells (14 ϫ 10 8 cells/kg) on day 0.At week +8 after transplantation, the patient's condition deteriorated with development of paroxysmal abdominal pain and diarrhea, marked hypoalbuminemia and elevated liver enzymes. Endoscopic biopsies obtained from the stomach and the duodenum revealed epithelial atrophy with necrosis and mucosal ulceration of the intestinal mucosa, accompanied by few apoptotic epithelial cells. Based on clinical and histologic findings, a diagnosis of chronic GVHD was made and the patient received a course of methylprednisolone, followed by prednisone at a dose of 50 mg daily. As there was unsatisfactory improvement in his symptoms, cyclosporin A was added to his immunosuppressive regimen, followed by thalidomide (200 mg/kg). The patient developed fever, and sputum culture yielded Klebsiella pneumonia, which was treated by ticracillinsulbactam. At this stage, prophylactic treatment against cytomegalovirus with ganciclovir three times weekly and intravenous immunoglobulin were added, as well as amphotericin B at a low dai...