title: Value of endovascular stent placement for symptomatic spontaneous isolated superior mesenteric artery dissection.
abstract: OBJECTIVE
  To evaluate the feasibility and efficacy of endovascular stent placement for the treatment of symptomatic spontaneous isolated superior mesenteric artery dissection.
  
  
  METHODS
  This retrospective study was undertaken in 12 consecutive patients who suffered from symptomatic spontaneous isolated superior mesenteric artery dissection. Seven patients with severe clinical symptoms underwent endovascular stent placement as a primary treatment and the other 5 patients received conservative treatment. The technical results, complications and clinical outcomes were analyzed. Follow-up was performed with computed tomographic angiography.
  
  
  RESULTS
  Primary endovascular stent placement was successfully performed in 7 patients with severe clinical symptoms. Successful conservative treatment was achieved in 3 patients. Endovascular stent placement was additionally performed in 2 patients with unsuccessful conservative treatment. A stent was misplaced in the false lumen in one of those two patients due to a severely stenotic true lumen. The fasting time and length of stay were significantly shorter in patients with successful endovascular therapy (median: 3 days and 5.5 days) than in those conducted conservatively (median: 9 days and 14 days) (p<0.05). During the follow-up period (median, 21 months; range, 10-36 months), 1 patient with endovascular stent placement had recurrent abdominal pain because of the wall adherent thrombus in the proximal segment of the superior mesenteric artery during the first follow-up month. No thrombosis or stenosis was found in the lumina of the stents.
  
  
  CONCLUSIONS
  Endovascular stent placement is a safe and feasible therapeutic approach for symptomatic spontaneous isolated superior mesenteric artery dissection with immediate success and satisfactory outcomes.
authors.affiliation: Department of Radiology, Interventional Institution of Sun Yat-sen University, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510630, Guangdong Province, China. pflb@sina.com
authors.forename: Pengfei
authors.initials: P
authors.lastname: Pang
authors.forename: Zaibo
authors.initials: Z
authors.lastname: Jiang
authors.forename: Mingsheng
authors.initials: M
authors.lastname: Huang
authors.forename: Bin
authors.initials: B
authors.lastname: Zhou
authors.forename: Kangshun
authors.initials: K
authors.lastname: Zhu
authors.forename: Hong
authors.initials: H
authors.lastname: Shan
mesh_terms: D000328:Adult; D000784:Aortic Dissection / Q000000981:diagnostic imaging* / Q000601:surgery*; D000792:Angiography / Q000379:methods; D001807:Blood Vessel Prosthesis; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D017538:Mesenteric Artery, Superior / Q000000981:diagnostic imaging* / Q000601:surgery*; D008875:Middle Aged; D019919:Prosthesis Implantation / Q000379:methods; D015641:Radiography, Interventional / Q000379:methods*; D012189:Retrospective Studies; D015607:Stents; D014057:Tomography, X-Ray Computed / Q000379:methods; D016896:Treatment Outcome