Swine-origin influenza A viral (H1N1) infection in children: Chest computed tomography findings

Soo Ah Im, Hyo Lim Kim, Jong Seo Yoon, Jin Han Kang, Joon Sung Lee, Ho Jong Chun

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Purpose. The aim of this study was to review the chest computed tomography (CT) findings in children with swine-origin influenza (H1N1) virus (S-OIV) infection. Materials and methods. The radiologists retrospectively reviewed chest CT findings in 12 children with S-OIV infection and recorded the following findings: groundglass opacities (GGO), consolidation, nodules, reticular opacities, peribronchial cuffing, and air trapping; distribution; affected lobes. The presence of pleural effusions, pneumomediastinum, pulmonary interstitial emphysema (PIE), and lymphadenopathy was also recorded. Results. Chest CT revealed GGO (67%), consolidation (67%), nodules (25%), peribronchial cuffi ng (42%), and air trapping (33%). The distribution of the lesions was random (75%), peribronchial (17%), or subpleural (8%). The lobes affected were the lower (92%), upper (58%), and middle (17%) lobes. There were associated pleural effusions (42%), PIE (42%), pneumomediastinum (33%), and lymphadenopathy (75%). Among five patients with air-leak complications, three had a history of allergies and three required the intensive care unit. Conclusion. Chest CT findings in children with S-OIV infection were peribronchial thickening and a mixture of airspace consolidation and GGO with random distribution and lower lobe predominance. Pleural effusion, lymphadenopathy, PIE, and pneumomediastinum may be associated findings.

Original languageEnglish
Pages (from-to)707-711
Number of pages5
JournalJapanese Journal of Radiology
Volume29
Issue number10
DOIs
StatePublished - Dec 2011

Bibliographical note

Funding Information:
Most of the numerical calculations have been performed on the Nec/SX5 of the National Computer Center of CNRS (IDRIS), with the support of the SPI Department of CNRS, under Project No. 0336.

Keywords

  • Chest CT
  • H1N1
  • Pneumomediastinum
  • Swine-origin influenza A

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