title: Mycoplasma pneumoniae pneumonia: radiographic and high-resolution CT features in 28 patients.
abstract: OBJECTIVE
  The aim of the study was to compare the radiographic and the high-resolution CT findings of Mycoplasma pneumoniae pneumonia.
  
  
  METHODS
  The chest radiographs and 1.5-mm collimation CT scans obtained in 28 patients with serologically proven M. pneumoniae pneumonia were retrospectively reviewed. The radiographs and CT scans were analyzed independently by two observers.
  
  
  RESULTS
  The most common finding on radiography was the presence of air-space opacification (n = 24), which was patchy and segmental (n = 9) or nonsegmental (n = 15) in distribution. On high-resolution CT, areas of ground-glass attenuation were seen in 24 patients (86%) and air-space consolidation in 22 (79%). In 13 patients (59%), the areas of consolidation had a lobular distribution evident on CT. Nodules were seen more commonly on high-resolution CT (25 of 28 patients, 89%) than on radiography (14 patients, 50%) (p < 0.01, chi-square test). In 24 (86%) of the 28 patients, the nodules had a predominantly centrilobular distribution on CT. Thickening of the bronchovascular bundles was identified more commonly on CT (23 of 28 patients, 82%) than on radiography (five patients, 18%) (p < 0.01, chi-square test).
  
  
  CONCLUSIONS
  The lobular distribution, centrilobular involvement, and interstitial abnormalities in M. pneumoniae pneumonia are often difficult to recognize on radiography but can usually be seen on high-resolution CT.
authors.affiliation: Department of Radiology, Vancouver Hospital and Health Sciences Centre, BC, Canada.
authors.forename: P
authors.initials: P
authors.lastname: Reittner
authors.forename: N L
authors.initials: NL
authors.lastname: Müller
authors.forename: L
authors.initials: L
authors.lastname: Heyneman
authors.forename: T
authors.initials: T
authors.lastname: Johkoh
authors.forename: J S
authors.initials: JS
authors.lastname: Park
authors.forename: K S
authors.initials: KS
authors.lastname: Lee
authors.forename: O
authors.initials: O
authors.lastname: Honda
authors.forename: N
authors.initials: N
authors.lastname: Tomiyama
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011019:Pneumonia, Mycoplasma / Q000000981:diagnostic imaging*; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed