Chapter 18: Allergic bronchopulmonary aspergillosis
Abstract:Allergic bronchopulmonary aspergillosis (ABPA) occurs in patients with asthma or cystic fibrosis resulting in pulmonary infiltrates, tenacious mucus plugs that harbor hyphae of Aspergillus fumigatus, elevations of total serum IgE concentration and peripheral blood, and sputum eosinophilia. Bronchiectasis is an irreversible complication of ABPA. The key to early diagnosis is considering ABPA in anyone with asthma or cystic fibrosis and a positive skin test to Aspergillus and /or recurrent infiltrates on radiographs. The differential diagnosis for ABPA in patients with asthma includes diseases in which there is an overlap of asthma, peripheral blood eosinophilia, and radiographic infiltrates. Examples include chronic eosinophilic pneumonia, Churg-Strauss syndrome, drug-induced pulmonary infiltrates, infection with a parasite, asthma with atelectasis, and lymphoma. Mucus plugging causing a “tree in bud” pattern on CT examination of the lungs may be from ABPA or other conditions such as nontuberculous (atypical) mycobacteria (Mycobacteria avium‐intracellulare complex). Prednisone is indicated to clear pulmonary infiltrates, and a usual course is for 3 months. Itraconazole and voriconazole are adjunctive and drug‐drug interactions must be considered as azoles decrease elimination of various medications. Although not familial in most patients, presentation of Asp f1 antigen is restricted to specific major histocompatability complex class II molecules, HLA-DR2 and HLA-DR5. There is an increased number of CD4+ Th2 lymphocytes in bronchoalveolar lavage, and Aspergillus fumigatus can serve as a growth factor of eosinophils potentiating the effects of IL-3, IL-5, and granulocyte colony-stimulating factor.
Document Type: Research Article
Publication date: May 1, 2012
More about this publication?
- Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.
The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma.
Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.
Articles marked "F" offer free full text for personal noncommercial use only.
The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
- Editorial Board
- Information for Authors
- Submit a Paper
- Information for Advertisers
- Reprint Requests
- Ingenta Connect is not responsible for the content or availability of external websites