title: Long-term follow-up of endovascular treatment of renal artery aneurysms with covered stent deployment.
abstract: BACKGROUND
  The aim of this study was to assess the technical success and clinical long-term results of renal artery aneurysm (RAA) treatment using covered stents.
  
  
  METHODS
  We performed a retrospective study on endovascular treatment of nine patients with 10 RAAs, arising from the main renal artery or from the proximal portion of large segmental arteries. All procedures were performed in our department between 2004 and 2011. The aneurysms were excluded using covered stents. Our follow-up included laboratories indexes, Computed Tomography-angiography (CTA) at 1-6-12-24 months and 48-month Duplex-ultrasound examination.
  
  
  RESULTS
  Study population included 4 males and 5 females (mean age: 63.5±7.3 y.o.). Six were affected by fibromuscular dysplasia and associated renal artery stenosis. The population showed a significant decrease of arterial blood pressure (from baseline values of 163.9±19.4/98.9±9.2 mmHg to 128.9±6.5/79.4±4.6 mmHg at 24 months follow-up) and of drug posology (baseline 3.7±0.7 drugs to 1.6±0.7 drugs at 24 months). Also they showed a significant decrease of serum creatinine levels (baseline 1.9±1.4 mg/dL vs.1.1±0.4 mg/dL at 12 months) and increase of glomerular filtration rate (from baseline values 46.9±23 mL/min/1.73 m2 to 69.1±20 mL/min/1.73 m2 at 24 months follow-up). CTA demonstrated patency of the cover stents, absence of endoleaks and re-stenosis in all patients. Only in one patient the inferior segmental artery was sacrificed due to the presence of its early origin, resulting in a small area of renal parenchyma infarction with no significant clinical consequences.
  
  
  CONCLUSIONS
  The procedure revealed to be safe for renal function, feasible and effective for the exclusion of the aneurismal sac and restoring vessel patency.
authors.affiliation: Department of Diagnostic Imaging, Molecular Imaging, Interventional Radiology and Radiation Therapy, University Hospital "Tor Vergata", Rome, Italy - danielemorosetti@hotmail.com.
authors.forename: Roberto
authors.initials: R
authors.lastname: Gandini
authors.forename: Daniele
authors.initials: D
authors.lastname: Morosetti
authors.forename: Marcello
authors.initials: M
authors.lastname: Chiocchi
authors.forename: Antonio
authors.initials: A
authors.lastname: Chiaravalloti
authors.forename: Daniele
authors.initials: D
authors.lastname: Citraro
authors.forename: Giorgio
authors.initials: G
authors.lastname: Loreni
authors.forename: Valerio
authors.initials: V
authors.lastname: DA Ros
authors.forename: Eva
authors.initials: E
authors.lastname: Salvatori
authors.forename: Giovanni
authors.initials: G
authors.lastname: Simonetti
mesh_terms: D000368:Aged; D000783:Aneurysm / Q000000981:diagnostic imaging / Q000601:surgery*; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects / Q000295:instrumentation*; D000072226:Computed Tomography Angiography; D057510:Endovascular Procedures / Q000009:adverse effects / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D012077:Renal Artery / Q000000981:diagnostic imaging / Q000601:surgery*; D012189:Retrospective Studies; D012384:Rome; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome; D018616:Ultrasonography, Doppler, Duplex