CTICasesMicrovascular Plug (MVP) Embolization of Pulmonary Arteriovenous Malformations (AVMs)
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Imaging findings
A young woman with profound hypoxemia and exercise intolerance due to multiple large pulmonary AVMs, likely related to hereditary hemorrhagic telangiectasia (HHT). Post-treatment CT demonstrated multiple small metal dots (two per device) in the regions of the AVMs, representing a new investigational microvascular plug (MVP) device. Imaging confirmed occlusion of the feeder arteries (up to 5mm) and absence of large draining veins opacifying, with associated areas of mosaic attenuation.
Key takeaways
Pulmonary AVMs can be effectively treated with embolization using devices like the microvascular plug (MVP). This self-expandable stent, designed for feeder vessels up to 5mm, offers a new option for AVM occlusion. Post-deployment imaging showing the characteristic dual metallic dots confirms successful exclusion of the feeding vessel and resolution of shunting, improving patient symptoms like hypoxemia.
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