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Open Access Publications from the University of California

Hemithorax Westermark Sign Secondary to Complete Pulmonary Artery Occlusion from Pulmonary Embolus

  • Author(s): Louthan, Michael
  • Ng, Daniel
  • et al.
Creative Commons 'BY' version 4.0 license

Case Presentation: We describe a complete right hemithorax Westermark sign found in a patient with a near-complete, right pulmonary artery trunk occlusion secondary to a pulmonary embolus.

Discussion: We review the sensitivity and specificity of a Westermark sign in the identification of a pulmonary embolism, and how this aided us in managing our patient in the emergency department.

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