CTICasesUnilateral Pulmonary Edema in Massive Bilateral Pulmonary Embolism with Lobe Sparing
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Imaging findings
Chest radiograph showed asymmetric edema/pneumonia pattern in the left upper lobe. CT revealed extensive bilateral pulmonary emboli, but no emboli in the left upper lobe.
Key takeaways
Asymmetric pulmonary edema can occur in areas of the lung spared by massive pulmonary embolism, due to asymmetric increased hydrostatic pressure in those unaffected arteries.
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