Billowing of Endologix Powerlink Stent Graft in Post Endovascular Repair of Abdominal Aortic Aneurysm: Simultaneous Findings on CT and Ultrasound Imaging.
Endoleaks remain a main concern in endovascular aneurysm repair. A potential false positive in the diagnosis of endoleak surveillance includes "billowing," a phenomenon of the polytetrafluoroethylene plastic outer fabric of the stent graft is seen separated from the struts of the metallic endoskeleton. Contrast presents beyond the endoskeleton but is still contained within the graft. This is secondary to intermittent attachment of the graft to the endoskeleton, and is only found in the Endologix Powerlink. The finding of billowing has been previously reported and is a common knowledge by those who deploy the stent graft. We report a case where there is contemporaneous imaging on computed tomography angiography as well as on ultrasound.
Department of Radiology, Loma Linda University Medical Center, Loma Linda, CA. Electronic address: naseemhelo@gmail.com.
Naseem
N
Helo
Department of Radiology, Loma Linda Veterans Hospital, Loma Linda, CA.
Arthur C
AC
Chang
Department of Radiology, Loma Linda Veterans Hospital, Loma Linda, CA.
Christine
C
Hyun
Department of Radiology, Loma Linda Veterans Hospital, Loma Linda, CA.
Kenneth S
KS
Chon
Department of Radiology, Loma Linda Veterans Hospital, Loma Linda, CA.
Alex C
AC
Yi
D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging / Q000601:surgery*; D001027:Aortography / Q000379:methods*; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000295:instrumentation*; D000072226:Computed Tomography Angiography; D003937:Diagnosis, Differential; D057867:Endoleak / Q000000981:diagnostic imaging; D057510:Endovascular Procedures / Q000295:instrumentation*; D006801:Humans; D008297:Male; D011237:Predictive Value of Tests; D011474:Prosthesis Design; D015607:Stents; D016896:Treatment Outcome; D018615:Ultrasonography, Doppler, Color