CTICasesPulmonary Arteriovenous Malformation in Hereditary Hemorrhagic Telangiectasia
Imaging findings
Initial chest radiograph shows a well-circumscribed solitary pulmonary nodule in the left lower lobe. Close evaluation reveals subtle feeding and draining vascular structures leading to the nodule. Post-treatment angiograms and radiographs show successful placement of two intravascular microvascular plugs with complete occlusion and subsequent regression of the malformation.
Key takeaways
Pulmonary arteriovenous malformations can radiographically mimic a solitary pulmonary nodule. When associated with hereditary hemorrhagic telangiectasia, these lesions can be successfully treated with transcatheter embolization using microvascular plugs, although close monitoring is required for potential collateral recruitment or recanalization.
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