title: [Radiological imaging in diagnosis for atypical pulmonary abscess].
abstract: OBJECTIVE
  Evaluate characteristics of the radiological image of atypical pulmonary abscess.
  
  
  METHODS
  The X-ray and CT image in 30 cases with atypical pulmonary abscess were analyzed.
  
  
  RESULTS
  The atypical pulmonary abscesses were classified into solitary ball type and irregular infiltration type. And these two types showed the following characteristics: circumscribed dissolution or small cavity; local congestion sign; coarse and long funiform shadow in margin; ambient circumscribed infiltrating shadow; adjacent pleural thickening and adhesion.
  
  
  CONCLUSIONS
  Existence of abscess and perifocal inflammatory changes is the key to diagnose and differentiate this atypical variant of lung abscess.
authors.affiliation: Beijing Tuberculosis and Thoracic Tumour Institute, Beijing 101149.
authors.forename: X
authors.initials: X
authors.lastname: Zhou
authors.forename: Y
authors.initials: Y
authors.lastname: Ma
authors.forename: J
authors.initials: J
authors.lastname: Chen
mesh_terms: D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008169:Lung Abscess / Q000145:classification / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed