CTICasesWestermark Sign in Acute Massive Pulmonary Embolism
Imaging findings
ER chest radiograph in a patient who presented in cardiovascular collapse shows focal hyperlucency and oligemia of the right upper lobe (Westermark sign) with a dilated pulmonary artery (Fleischner sign). CT confirmed massive bilateral saddle pulmonary emboli.
Key takeaways
The Westermark sign is a rare but classic radiographic sign of pulmonary embolism, representing regional oligemia distal to an occluded vessel. It indicates massive embolism and, when coupled with acute right heart strain, represents a medical emergency.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Bronchial-to-Pulmonary Artery FistulaVascular
- Accelerated SilicosisExposure
- Sternal Dehiscence and hardware MigrationIatrogenic
- Giant Traumatic Diaphragmatic HerniaTrauma
- Iatrogenic Esophageal Perforation post-Spine FusionIatrogenic
- Pleural Breast Implants for Post-Pneumonectomy SyndromeIatrogenic
- Vaping-Associated Lung InjuryExposure
- Bronchiolocentric Fibrosis in Connective Tissue DiseaseILD
See all cases from August 14, 2020 →