CTICasesPulmonary Veno-venous Shunt
Imaging findings
A tangle of dilated vessels without the typical feeding artery/draining vein relationship of an AVM; confirmed as a veno-venous shunt on angiography.
Key takeaways
Not all vascular shunts in the lung are AVMs; a veno-venous pathway can be acquired, possibly related to underlying mild fibrosing mediastinitis.
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