Pseudomonas Pneumonia: A Prototype of Hospital-Based infection

The authors studied 23 proved cases of Pseudomonas pneumonia; there were pathologic, anatomic, and roentgen correlations in 10 cases. Radiographic findings were (a) varying degrees of patchy bronchopneumonia which included a nodular appearance often seen early in aspirational or septicemic pneumonia; (b) large excavating abscesses and pathologic microabscesses; (c) an occasional interstitial appearance; (d) smaller pleural effusions or areas of thickening which were common but not prominent; (e) occasional pneumatocele formation with possible pneumothorax. Pseudomonas chest infection may be part of a continuing pattern of abnormal pulmonary densities produced by pneumonia with changing etiologic agents.