Presentation
Shortness of breath. Hemoptysis.
Patient Data
Age: 20 years
Gender: Female
From the case:
Westermark sign
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Left mid/upper zone regional lucency with truncation of normal left-sided pulmonary markings. Bilateral pleural effusions.
Case Discussion
CTPA-proven pulmonary embolus (not shown). Westermark sign is a focal peripheral hyperlucency secondary to oligemia, and is a sign of pulmonary embolus on chest radiographs.
Acknowledgement: Dr Simon Ussher.