Summary:Invasive aspergillosis affects 3 to 11% of BMT patients with a high mortality rate (60 to 95%). Extra-pulmonary disease is an unusual event, and primary renal aspergillosis is extremely uncommon. A patient with CML treated with BMT, who developed primary renal and subsequently hepatic aspergillosis, is described. Dysfunction of the mucosal barrier secondary to conditioning therapy, was a possible portal of entry for the fungus. Fine needle aspiration was very useful, as is direct microscopic examination of the urine, for diagnosis of the fungal infection. Surgical drainage of the abscess followed by antifungal therapy is the treatment of choice. Unconducive situations, such as refractory thrombocytopenia, are associated with the worst outcome in these patients. Keywords: bone marrow transplantation; primary renal aspergillosis; disruption of mucosal barrier; fine needle aspiration; surgical approach; antifungal therapy Invasive aspergillosis is a devastating infection that affects mainly immunocompromised hosts. Between 3 and 11% of BMT patients develop Aspergillus infections, especially with A. fumigatus and A. flavus.1,2 Primary renal aspergillosis is extremely uncommon; only 23 cases have previously been described in the literature and four of these are in AIDS patients. 3 We report a case of primary renal aspergillosis with extension to the liver in a BMT patient, which is, as far as the authors know, the first reported case.
Case reportA 49-year-old male with CML in chronic phase, with a good performance status and no previous infection history, received an HLA-identical allogeneic BMT. He was conditioned with busulphan 4 mg/kg p.o. in divided doses daily for 4 days (total dose 16 g/kg) and cyclophosphamide 60Correspondence: Dr CR de Medeiros, Serviço de Transplante de Medula Ó ssea, Hospital de Clínicas, Rua General Carneiro, 181, 15°andar 80060-900, Curitiba, Paraná, Brazil Received 26 October 1998; accepted 12 February 1999 mg/kg daily i.v. on days 1 and 2 (total dose 120 g/kg). Immunoprophylaxis of GVHD was with cyclosporin A, methotrexate and prednisone. On day +7, mucositis grade III was noticed. On day +16, he developed abdominal pain and ultrasound revealed a stone in the right renal pelvis, with no evidence of urinary obstruction. On day +29, hematuria was noticed, followed by passage of the renal stone. On examination this was demonstrated to be composed of aspergillus. Direct microscopic examination of the urine showed fragments of hyaline and septate hyphae, also suggestive of aspergillus, with A. fumigatus growing on urine culture. Amphotericin B (1 mg/kg/day) was started. An abdominal CT scan was carried out a week later because of persisting abdominal pain. This revealed hypodense lesions in both kidneys. The liver also had a hypodense lesion contiguous to the right kidney abscess, most likely due to direct extension from the renal lesion (Figure 1). An extensive study was carried out, including CT scan of lungs and sinuses, looking for the portal of entry of the fungus which was not ...