European Radiology

, Volume 24, Issue 12, pp 3251–3259 | Cite as

Comparison of high-resolution computed tomography findings between Pseudomonas aeruginosa pneumonia and Cytomegalovirus pneumonia

  • Ahmad Khalid OmeriEmail author
  • Fumito Okada
  • Shoko Takata
  • Asami Ono
  • Tomoko Nakayama
  • Yumiko Ando
  • Haruka Sato
  • Kazufumi Hiramatsu
  • Hiromu Mori



To compare pulmonary high-resolution CT (HRCT) findings in patients with Pseudomonas aeruginosa pneumonia to HRCT findings in patients with Cytomegalovirus (CMV) pneumonia.


We studied 124 patients (77 men, 47 women; age range, 20–89 years; mean age, 65.4 years) with P. aeruginosa pneumonia and 44 patients (22 men, 22 women; age range, 36–86 years; mean age, 63.2 years) with CMV pneumonia.


CT findings of consolidation (p < 0.005), bronchial wall thickening (p < 0.001), cavity (p < 0.05), and pleural effusion (p < 0.001) were significantly more frequent in patients with P. aeruginosa pneumonia than in those with CMV pneumonia. Centrilobular nodules, a crazy-paving appearance, and nodules were significantly more frequent in patients with CMV pneumonia than in those with P. aeruginosa pneumonia (all p < 0.001).


Pulmonary HRCT findings, such as bronchial wall thickening, crazy-paving appearance, and nodules may be useful in distinguishing between P. aeruginosa pneumonia and CMV pneumonia.

Key Points

Distinguishing Pseudomonas aeruginosa pneumonia from Cytomegalovirus pneumonia is important.

Characteristic features of underlying conditions are present in each pneumonia species.

Bronchial wall thickening and cavities are more frequent in Pseudomonas aeruginosa pneumonia.

Nodules and a crazy-paving appearance are more frequent in Cytomegalovirus pneumonia.


Computed tomography Pseudomonas aeruginosa Cytomegalovirus (CMV) pneumonia Nosocomial infection Ventilator-associated pneumonia 



High-resolution computed tomography

CMV pneumonia

Cytomegalovirus pneumonia

P. aeruginosa

Pseudomonas aeruginosa


Acquired immunodeficiency syndrome


Bronchoalveolar lavage


Ground-glass attenuation



The scientific guarantor of this publication is Fumito Okada. The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article. The authors state that this work has not received any funding. One of the authors has significant statistical expertise. Institutional Review Board approval was not required because this study was retrospective study. Written informed consent was not required for this study because this study was retrospective study. Methodology: retrospective, diagnostic or prognostic study, performed at one institution.

Conflict of interest

None of the authors has a direct or indirect financial interest in the products under investigation or in the subject matter discussed in this article.


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Copyright information

© European Society of Radiology 2014

Authors and Affiliations

  • Ahmad Khalid Omeri
    • 1
    Email author
  • Fumito Okada
    • 1
  • Shoko Takata
    • 1
  • Asami Ono
    • 1
  • Tomoko Nakayama
    • 2
  • Yumiko Ando
    • 3
  • Haruka Sato
    • 1
  • Kazufumi Hiramatsu
    • 4
  • Hiromu Mori
    • 1
  1. 1.Department of RadiologyOita University Faculty of MedicineYufuJapan
  2. 2.Department of RadiologyOita Red Cross HospitalOitaJapan
  3. 3.Department of RadiologyOita Nishibeppu National HospitalOitaJapan
  4. 4.Hospital Infection Control CenterOita University HospitalOitaJapan

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