II. Pathophysiology

  1. Air containing Bronchus
    1. Surrounded by collapsed or consolidated lung

III. Interpretation

  1. Lung Consolidation or Atelectasis
    1. Secretions able to exit from consolidated region
    2. Good prognostic sign
  2. Absence of Air Bronchogram within lobar Pneumonia
    1. Evaluate for central lung tumor
  3. False negative
    1. Poorly penetrated films (white)

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