The authors describe an invasive pulmonary Aspergillus infection in three immunocompromised patients (1x plasmacytoma, 1x autoimmune thrombocytopenia, 1x asthma bronchiale) and draw attention to the possible occurrence of this disease also in subjects without serious neutropenia. The common risk factor in all three patients was corticoid treatment. In immunocompromised patients only early adequate and sufficiently long antimycotic treatment gives hope that the infection will be controlled.

        Key words: Aspergillus fumigatus - Immunosuppression - Glucocorticoids