title: Long-term follow-up of surgically excluded popliteal artery aneurysms with multi-slice CT angiography and Doppler ultrasound.
abstract: The purpose of this study was to evaluate the role of multi-slice computed tomography (MSCT) angiography in the follow-up of popliteal artery aneurysms (PAAs) that have been operated on. Aneurysm exclusion and progression, graft patency and graft-related complications were analyzed. Fourteen patients with 21 surgically excluded PAAs were evaluated with MSCT angiography with slice thickness of 1.25 mm. The mean follow-up time was 67 months. MSCT demonstrated blood flow in six non-excluded PAAs (24%), with an average increase in the diameter of 21 mm over time. Fifteen PAAs demonstrated no blood flow and revealed an average decrease of 7 mm in diameter. The origin of this residual perfusion was demonstrated, and collaterals were involved in five of six non-excluded PAAs. In addition, MSCT demonstrated three graft stenoses. Furthermore, two occluded grafts were visualized. Twenty-four percent of the patients after surgical exclusion of PAAs revealed residual perfusion within the aneurysmal sac during follow-up, with a significant increase in the aneurysmal size with MSCT. Moreover, evaluation of the graft patency could also be done as could demonstration of anastomotic abnormalities. Thus, MSCT might be considered as a new tool to evaluate residual collateral feeding of popliteal aneurysmal sac and could be useful in identification and localization of feeding vessels.
authors.affiliation: Department of Thoracic and Vascular Surgery, CHUV, Lausanne, Switzerland.
authors.forename: Sebastien
authors.initials: S
authors.lastname: Deglise
authors.forename: Salah D
authors.initials: SD
authors.lastname: Qanadli
authors.forename: Elena
authors.initials: E
authors.lastname: Rizzo
authors.forename: Nicolas
authors.initials: N
authors.lastname: Ducrey
authors.forename: Francesco
authors.initials: F
authors.lastname: Doenz
authors.forename: Claude
authors.initials: C
authors.lastname: Haller
authors.forename: Alban
authors.initials: A
authors.lastname: Denys
authors.forename: Jean-Marc
authors.initials: JM
authors.lastname: Corpataux
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000783:Aneurysm / Q000000981:diagnostic imaging / Q000601:surgery*; D000792:Angiography / Q000379:methods; D019917:Blood Vessel Prosthesis Implantation; D003097:Collateral Circulation / Q000502:physiology; D003251:Constriction, Pathologic / Q000209:etiology; D018450:Disease Progression; D005500:Follow-Up Studies; D006083:Graft Occlusion, Vascular / Q000209:etiology; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D011150:Popliteal Artery / Q000000981:diagnostic imaging / Q000601:surgery*; D012039:Regional Blood Flow / Q000502:physiology; D012501:Saphenous Vein / Q000637:transplantation; D014057:Tomography, X-Ray Computed / Q000379:methods*; D018608:Ultrasonography, Doppler