Skip Navigation LinksHome > May/June 2012 - Volume 36 - Issue 3 > Computed Tomography Findings of Influenza A (H1N1) Pneumonia...
Text sizing:
A
A
A
Journal of Computer Assisted Tomography:
doi: 10.1097/RCT.0b013e31825588e6
Cardiothoracic Imaging

Computed Tomography Findings of Influenza A (H1N1) Pneumonia in Adults: Pattern Analysis and Prognostic Comparisons

Kang, Hee MD*; Lee, Kyung Soo MD*; Jeong, Yeon Joo MD; Lee, Ho Yun MD*; Kim, Kun Il MD; Nam, Kyung Jin MD

Collapse Box

Abstract

Aim: The aim of this study was to evaluate retrospectively the chest computed tomography findings of influenza A (H1N1) pneumonia and their relationship with clinical outcome.

Methods: Chest computed tomography findings and clinical outcomes of 76 patients with influenza A (H1N1) pneumonia were assessed. Computed tomography findings were evaluated for the presence and distribution of parenchymal abnormalities, which were then classified into 3 patterns: bronchopneumonia, cryptogenic organizing pneumonia (COP), and acute interstitial pneumonia (AIP) patterns. Clinical courses were divided into 2 groups on the basis of necessitating admission to intensive care unit or mechanical ventilation therapy (group 1) or not (group 2).

Results: Lung abnormalities consisted of ground-glass opacity (93%, 71 patients), consolidation (66%, 50 patients), small nodules (61%, 46 patients), and tree-in-bud sign (22%, 17 patients). Lesions were classified into bronchopneumonia (49%, 37 patients), COP (30%, 23 patients), AIP (18%, 14 patients), and unclassifiable (3%, 2 patients) patterns. Patients with AIP pattern had a tendency to belonging to group 1, accounting for 40% (8 of 20 patients) of group 1 course and only 11% (6 of 56 patients) of group 2 course (P = 0.004).

Conclusions: Computed tomography findings of influenza A (H1N1) pneumonia in adults can be classified into COP, AIP, and bronchopneumonia patterns. Patients presenting with AIP pattern have a tendency to show poor prognosis.

© 2012 Lippincott Williams & Wilkins, Inc.

  

Login

Article Tools

Share

Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.