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Type IV endoleak is a very rare complication observed after implantation of aortobiiliac stent grafts. The difficult diagnosis of type IV endoleak leads to the application of many imaging methods in the diagnostic process. We present a case report of a patient who underwent implantation of an aortobiiliac stent graft in 2004. After surgery, the size of the aneurysm sac was monitored continually in the subsequent imaging studies. Progression of the aneurysm sac volume was detected in 2009. In a short period of time, the diameter of the aneurysm increased from 100 to 140 mm. Angio-computed tomography and angiography did not reveal the location of the endoleak. The attempt at localization and endovascular closure of the source of the endoleak failed. It was decided to treat the patient surgically. Intraoperatively, the source of the endoleak was visualized, and the endoleak was closed with surgical sutures.

Diagnosis and treatment of a patient with type IV endoleak as a late complication after endovascular aneurysm repair