Endovascular Aneurysm Repair for a Sac Enlargement Caused by Type IIIb Endoleak Diagnosed Using Four-Dimensional Computed Tomography

Type IIIb endoleaks following EVAR are often difficult to diagnose using traditional modalities. Thus, 4D-CT may be useful in identifying endoleak types.Clinical ImpactThis case report highlights the effectiveness of four-dimensional computed tomography (4D-CT) in diagnosing type IIIb endoleaks after endovascular aneurysm repair (EVAR). Traditional imaging methods often fail to accurately identify this type of endoleak, which can lead to aneurysm rupture if untreated. The use of 4D-CT allowed for a definitive diagnosis and timely reintervention, thus improving patient outcomes. Incorporating 4D-CT into post-EVAR surveillance protocols may enhance the detection and management of type IIIb endoleaks, potentially reducing the risk of complications and improving long-term patient prognosis.