CTICasesRecanalized Pulmonary Arteriovenous Malformation (AVM)
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Imaging findings
CT scan shows existing coils in the right lower lobe, with clear evidence of a recanalized AVM. An artery is seen coursing through the middle of the coils, which appear significantly larger than the vessel. No other AVMs were identified. Angiography confirmed recanalization, enabling successful re-embolization with additional coils.
Key takeaways
Pulmonary AVMs can recanalize after initial embolization, especially if the coils are oversized or not packed tightly enough to induce complete thrombosis. Recurrence can lead to symptoms such as TIAs. Follow-up imaging and angiography are essential to detect and treat recanalized AVMs.
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