CT Findings in Pediatric Novel Influenza A (H1N1)-Associated Pneumonia


Masaru Osawa 1 , Yuki Hiraishi 1 , Masayuki Yokoyama 1 , Hisashi Shimizu 2 , Takashi Yoshinobu 3 , Katsumi Abe 3 , *

1 Department of Radiology, Shiki City Hospital, Saitama, Japan

2 Department of Pediatrics, Shiki City Hospital, Saitama, Japan

3 Department of Radiology, Nihon University School of Medicine, Tokyo, Japan

How to Cite: Osawa M, Hiraishi Y, Yokoyama M, Shimizu H, Yoshinobu T, et al. CT Findings in Pediatric Novel Influenza A (H1N1)-Associated Pneumonia, Iran J Pediatr. 2015 ; 22(2):213-217.


Iranian Journal of Pediatrics: 22 (2); 213-217
Published Online: June 30, 2012
Article Type: Research Article
Received: October 20, 2010
Accepted: October 13, 2011


Objective: To explore CT findings in pediatric novel influenza A (H1N1)-associated pneumonia
Methods: We examined the CT findings in a series of six children with influenza H1N1-associated pneumonia.
Findings: In this series of cases, the predominant CT patterns were consolidations surrounded by ground glass opacities (GGOs) as well as isolated GGOs in all patients. Atelectasis was present in the right upper lobe (n=2) in three cases and pneumomediastinum in two.
Conclusion: In this series of cases, there may be no imaging differences between pediatric and reported adult influenza H1N1 cases and other viral pneumonia cases even with CT. Pneumomediastinum and atelectasis, especially in the right upper lobe, may frequently present in influenza H1N1-associated pneumonia as well as in other pediatric respiratory diseases.




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