Large Venous Sac Thrombus Formation after Endovascular Embolization of Ruptured Pulmonary Arteriovenous Malformation: Usefulness of Time-Resolved MR Angiography in Decision Making

Pulmonary arteriovenous malformations (PAVMs) are direct connections between the pulmonary artery and vein, which can result in paradoxical embolism causing stroke and brain abscess due to a right-to-left shunt or thin-walled aneurysmal sac rupture (1). Venous sac thrombosis after endovascular feeding artery embolization can migrate to the systemic circulation if residual shunt flow remains despite no abnormality in the pulmonary venous circulation (2,3). The authors observed a partial venous sac thrombus after feeding artery embolization for a ruptured PAVM, and it was challenging to determine whether the patient should undergo additional invasive procedures or only be assessed for reperfusion flow.
Source: Journal of Vascular and Interventional Radiology : JVIR - Category: Radiology Authors: Tags: Letter to the Editor Source Type: research