J Korean Soc Radiol.  2010 Apr;62(4):361-364. 10.3348/jksr.2010.62.4.361.

Radiologic Findings of Influenza A (H1N1) Pneumonia: Report of Two Cases

• Oh JK
• Ahn MI
• Jung JI
• Han DH
• Park SH
• Park CK
• Kim YK

• KMID: 1460069
• DOI: http://doi.org/10.3348/jksr.2010.62.4.361

Abstract

Novel influenza A (H1N1) infection is a highly infectious disease, which has been rapidly spreading worldwide since it was first documented in March of 2009 in Mexico. We experienced and report two cases of Influenza A (H1N1) pneumonia, accompanied by chest radiographic and CT findings. The chest radiographs revealed diffuse haziness and extensive airspace consolidation, whereas the CT scans demonstrated multifocal areas of ground glass opacity and airspace consolidation with a CT halo sign.

MeSH Terms

Communicable Diseases
Glass
Influenza A Virus, H1N1 Subtype
Influenza, Human
Mexico
Oseltamivir
Pneumonia
Pneumonia, Viral
Thorax
Tomography, X-Ray Computed
Oseltamivir

Figure

• 

  Fig. 1 A 52-year-old previously healthy woman, with no recent history of travel or contact with ill-individuals. A. An anteroposterior chest radiograph shows both parahilar haziness and suspicious consolidation in the right suprahilar region. B-D. HRCT scans show multifocal areas of peribronchial and subpleural ground-glass opacification and some consolidation. Note smooth interlobular septal thickening and minimal bilateral pleural effusion.

• 

  Fig. 2 A 73-year-old asthmatic woman, with a recent history of travel to United States. A, B. HRCT scans obtained from outside hospital show multifocal areas of consolidation with surrounding ground-glass opacification in both lungs. C. Chest radiograph at the time of admission to our hospital shows extensive bilateral airspace consolidation, which suggests multifocal pneumonia combined with ARDS. A small amount of pleural effusion is noted in the right upper lateral portion. D. Follow-up chest radiographs four days later shows persistent bilateral pulmonary opacity with an increased amount of pleural effusion. The patient eventually expired due to respiratory failure.

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