Incidence and diagnostic yield of repeat imaging-based screening for hepatic arteriovenous malformations in patients with HHT.

We isolated all adult patients with hereditary hemorrhagic telangiectasia evaluated at the University of California, San Francisco HHT Center of Excellence between 2013 and 2025.

Of the 195, 30 (15.4%) underwent repeat hepatic imaging.

Across 48 total repeat imaging studies, the detection rate per study was 4.2%.

Across 386.5 person-years of follow-up, the incidence rate of clinically significant hepatic arteriovenous malformations recognition was 0.52 per 100 person-years.