Mycoplasma pneumoniae pneumonia: CT features in 16 patients

Eur Radiol. 2006 Mar;16(3):719-25. doi: 10.1007/s00330-005-0026-z. Epub 2005 Oct 8.


The objective of this study was to assess the computed tomography (CT) features of Mycoplasma pneumoniae pneumonia. We retrospectively reviewed CT findings of 16 patients (M:F = 9:7, age range 1-74 years, median 9 years) with serologically proven Mycoplasma pneumoniae pneumonia and with chest CT scan available. Two distinctive patterns of CT features of M. pneumoniae pneumonia were noted between the paediatric (age < 18 years) and the adult (age > or = 18 years) groups. The pediatric group (n=11) showed lobar or segmental consolidation (100%) with frequent pleural effusion (82%) and regional lymphadenopathy (82%) and mild volume decrease of the involved lobe (73%), while four of the five adult patients showed diffuse and/or multifocal, centrilobular or peribronchovascular areas of ground-glass attenuation (80%) with a lobular distribution, and frequent thickening of interlobular septa (60%) and the bronchial walls (40%) were also detected at high-resolution CT. The CT finding of a lobar or segmental consolidation with a parapneumonic effusion seen in our children with M. pneumoniae pneumonia was similar to that of bacterial lobar pneumonia. In contrast, the CT findings noted in our adult patients consisted of a mixture of a bacterial bronchopneumonia pattern and a viral interstitial pneumonia pattern.

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Child
  • Child, Preschool
  • Contrast Media
  • Female
  • Humans
  • Infant
  • Iopamidol
  • Male
  • Middle Aged
  • Pneumonia, Mycoplasma / diagnostic imaging*
  • Retrospective Studies
  • Tomography, X-Ray Computed / methods*


  • Contrast Media
  • Iopamidol