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Table 57.2

Chest X-Ray Findings in Pulmonary Embolism

  • Normal appearances
  • Elevated hemidiaphragm
  • Linear atelectasis
  • Small pleural effusion
  • Focal shadowing
  • Regional oligaemia distal to an obstructive embolus (Westermark's sign)
  • Enlarged right descending central pulmonary artery (Palla's sign)
  • Local widening of the pulmonary artery by impaction of embolus (Fleischer's sign)
  • Peripheral pleural-based wedge of airspace opacity with a rounded convex apex implying an area of lung infarction (Hampton's hump)