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The radiologic manifestations of H5N1 avian influenza.
The radiologic manifestations of H5N1 avian influenza.
- Source :
-
Journal of thoracic imaging [J Thorac Imaging] 2006 Nov; Vol. 21 (4), pp. 259-64. - Publication Year :
- 2006
-
Abstract
- Avian influenza is caused by the H5N1 subtype of the influenza A virus. Human transmission is either directly through close contact with infected birds usually poultry or their secretions. To date 178 people throughout South East Asia have been infected with 85 deaths. Patients usually present with a rapidly progressive pneumonia that can result in respiratory failure and acute respiratory distress syndrome. The chest radiograph therefore remains the most convenient and accessible imaging modality. Studies have shown that most radiographs are abnormal at the time of presentation with multifocal consolidation the commonest radiographic finding. During the course of disease, pleural effusions and cavitation can also develop. Consolidation that involves > or = 4 zones on presentation or at day 7 after the onset of symptoms and subsequent development of acute respiratory distress syndrome are generally associated with an adverse outcome. Chest CT examinations performed during the convalescent period have demonstrated persistent ground glass attenuation and segmental consolidation. Additional features included pseudocavitation, pneumatocoele formation, lymphadenopathy, and centrilobular nodules. Overall the appearances are suggestive of mild fibrosis.
- Subjects :
- Animals
Asia, Southeastern epidemiology
Disease Outbreaks
Humans
Influenza in Birds epidemiology
Influenza in Birds pathology
Influenza in Birds therapy
Influenza in Birds virology
Influenza, Human epidemiology
Influenza, Human pathology
Influenza, Human therapy
Influenza, Human virology
Poultry
Respiratory Distress Syndrome diagnostic imaging
Respiratory Distress Syndrome virology
Respiratory Insufficiency diagnostic imaging
Respiratory Insufficiency virology
Tomography, X-Ray Computed
Influenza A Virus, H5N1 Subtype
Influenza in Birds diagnostic imaging
Influenza, Human diagnostic imaging
Subjects
Details
- Language :
- English
- ISSN :
- 0883-5993
- Volume :
- 21
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Journal of thoracic imaging
- Publication Type :
- Academic Journal
- Accession number :
- 17110849
- Full Text :
- https://doi.org/10.1097/01.rti.0000213573.94032.53