SHM Converge Scientific Abstract ePoster Gallery-Hepatic Artery Pseudoaneurism-an Institutional Experience

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This Mayo Clinic retrospective study reviewed hepatic artery pseudoaneurysm (HAP) cases across three sites from 1998 to 2022. Of 37 identified cases, 27 met inclusion criteria. The goal was to describe clinical features, causes, treatment, and outcomes, and compare results with older literature.<br /><br />HAP is a rare but potentially life-threatening vascular complication, especially after liver transplantation or other hepatobiliary procedures. Historically, it has been associated with very high mortality and infection rates, particularly in post-transplant patients. In contrast, this study found much better outcomes.<br /><br />Key findings:<br />- Overall mortality was 18.5%.<br />- Infection rate was only 3%, far lower than older reports.<br />- Most HAPs were related to prior procedures (89.9%), including TIPS/balloon angioplasty, liver transplant, liver biopsy, ERCP/biliary drainage, cryoablation, Whipple procedure, laparoscopic cholecystectomy, and trauma.<br />- 11.1% were spontaneous.<br />- Common associated conditions included malignancy, cirrhosis, anticoagulation use, and liver transplant history.<br /><br />Risk factors linked to worse 1-year survival were:<br />- Tumor invasion<br />- Liver necrosis<br />- Portal vein thrombosis (PVT)<br />- Blood transfusion<br /><br />Notably, factors such as male sex, anticoagulation, GI bleeding, rupture, and liver transplant history were not significantly associated with survival.<br /><br />The authors conclude that improved imaging, earlier diagnosis, and better management at tertiary academic centers likely explain the lower mortality and infection rates compared with historical data. HAP remains important because it can rupture and cause bleeding, but mortality appears lower than previously reported when detected and treated promptly.

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Tatjana Gavrancic

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Author List Aleksandra Murawska-Baptista, Charles Ritchie, Igor Dumic, Libardo Rueda Prada, Marko Gorasevic, Melissa Cortes, Patricia Chipi, Tatjana Gavrancic, Waqas Tahir, Zlatko Devcic

Category Research

Concept Hepatic Artery Pseudoaneurysm

Concept Rupture

Concept Mortality

Concept Treatment

Concept Liver Transplantation

Distinguished Non-Finalist

Presenter Organization Mayo Clinic, Jacksonville, Florida

Presenting Author Tatjana Gavrancic

Track Outcomes Research

Keywords

hepatic artery pseudoaneurysm

HAP

liver transplantation

hepatobiliary procedures

retrospective study

mortality

infection rate

portal vein thrombosis

tumor invasion

vascular complication

Hepatic Artery Pseudoaneurysm

Rupture

Mortality

Treatment

Liver Transplantation