Background: Invasive aspergillosis has been predominantly associated with pulmonary infection, particularly amongst immunocompromised individuals. Extrapulmonary infections with Aspergillus specie have been reported rarely irrespective of immune status. Risk factors for invasive aspergillosis include prolonged and severe neutropenia, haematopoietic stem cell and solid organ transplantation, advanced AIDS, and chronic granulomatous disease. The most frequently involved specie is Aspergillus fumigatus that constitutes over 90% of cases, followed by Aspergillus flavus, usually associated with a primary skin infection. Haematogenous spread to the bone causing osteomyelitis is the commonest form of disseminated aspergillosis and a surprisingly high proportion of these patients have no immunosuppression. We present a rare case of bone marrow invasion by Aspergillusspp. in a 3-year-old patient with sickle cell trait and chronic Aspergillosis. Case report: A 3-year-old patient with sickle cell trait was brought to the paediatric unit with recurrent diarrhoea, abdominal distention, weight loss and persistent cough. The child was severely wasted with generalised peripheral lymphadenopathy. She had marked respiratory distress and hepatosplenomegaly but no demonstrable ascites. Haematologic 9 examination revealed leukaemoid reaction (leukocyte count of 44.0 x 10 /L) with monocytosis 3 (10%) and thrombocytopenia (platelet count of 97,000/mm ); no blast cells were seen on blood film. The bone marrow was hypercellular with a myeloid/erythroid ratio of 20:1, consistent with infection. Bone Marrow culture yielded Aspergillus spp. and other results of sepsis work up were negative. Conclusion: Cases of extrapulmonary invasive aspergillosis have been reported rarely in both immunocompetent and immunocompromised patients. Haematogenous spread to the bone is the commonest form of disseminated disease.
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