CTICasesHypoxemic Vasoconstriction/Endobronchial Valves
Imaging findings
Lack of opacification in pulmonary veins in a lung segment with endobronchial valves during a PE study.
Key takeaways
Localized lack of venous filling may be due to hypoxemic vasoconstriction (shunting blood away from under-ventilated areas) rather than primary thrombus.
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