Visceral Pseudoaneurysm Embolisation Using ‘Ping-Pong’ Technique : Importance of Dual Arterial Catheterisation to Prevent Rupture

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Supracolic peri-pancreatic visceral pseudoaneurysms combine the challenges of difficult location for open surgical repair with unpredictable risk of fatal exsanguination. Endovascular embolisation is a well-established method of safely decompressing these lesions using a variety of thrombogenic agents. A single catheter technique is commonly employed to achieve this outcome. However, there is also a risk of iatrogenic rupture during these procedures as a result of occlusion of one vessel allowing pressure to rise through any other vessel(s). Thus a thorough understanding of the flow dynamics prior to and during occlusion is essential for safe decompression. We report the adaptation of dual arterial catheter technique in treating these lesions in an 80-year old man with a large, leaking peripancreatic visceral pseudoaneurysm. Our technique of alternating between intervention and observation of effect allows greater control of the potentially unpredictable haemodynamic situation.

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