Allergic bronchopulmonary aspergillosis (ABPA) is a rare condition caused by inhalation of spores of the Aspergillus fungus (mainly fumigatus species), which triggers a hypersensitivity reaction to endobronchial growth. It affects asthmatic and atopic patients more frequently. and cystic fibrosis patients less frequently. Our patient is also immunosuppressed due to his kidney transplant.

The diagnosis is made with clinical, laboratory and imaging criteria. Our patient met the clinical and imaging criteria. Laboratory results yield: Eosinophils 13%. VSG 18 mm. Total IgE 1600. IgE AF 53 ku / L (very high value). AF: Aspergillus Fumigatus.

Fulfilling the criteria for the diagnosis of ABPA, it was decided to perform fiberoptic bronchoscopy with bronchoalveolar lavage results pending. Although the isolation of the fungus in respiratory secretions supports the diagnosis, it is not an exclusive criterion for it.