title: Clinical and angiographic follow-up of spontaneous isolated superior mesenteric artery dissection.
abstract: OBJECTIVE
  To observe the clinical features and angiographic findings in patients with a spontaneous isolated superior mesenteric artery dissection (SISMAD) and to identify any correlation between them.
  
  
  METHODS
  From a single institution, 32 patients (22 symptomatic patients at presentation; mean age 54years; men 97%) with SISMAD were retrospectively reviewed. All patients were available for clinical follow-up after treatment (conservative, n=28, 88%, open or endovascular superior mesenteric artery (SMA) reconstruction, n=4, 12%), and follow-up CT scans were available in 28 patients (mean 22months, range 1-80months).
  
  
  RESULTS
  We found a positive correlation between pain severity and dissection length (p=0.03, rho=0.50, Spearman's partial correlation analysis). After conservative treatment, only one patient (3%) required bowel resection, and there was no difference in outcome between patients who were treated with anticoagulation or anti-platelet therapy and those who were not (p=1.00, Fisher's exact test). No patients had progression of their lesion on the follow-up CT angiography.
  
  
  CONCLUSIONS
  In SISMAD patients, dissection length is positively associated with more severe clinical symptoms. After conservative treatment, we observed a benign clinical course and no CT progression of the dissection, even without anticoagulation or anti-platelet therapy. Based on our observation, patients with SISMAD can be treated conservatively without anticoagulation therapy.
authors.affiliation: Division of Vascular Surgery, Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Ilwon-dong #50, Gangnam-gu, Seoul 135-710, South Korea.
authors.forename: W S
authors.initials: WS
authors.lastname: Yun
authors.forename: Y W
authors.initials: YW
authors.lastname: Kim
authors.forename: K B
authors.initials: KB
authors.lastname: Park
authors.forename: S K
authors.initials: SK
authors.lastname: Cho
authors.forename: Y S
authors.initials: YS
authors.lastname: Do
authors.forename: K B
authors.initials: KB
authors.lastname: Lee
authors.forename: D I
authors.initials: DI
authors.lastname: Kim
authors.forename: D K
authors.initials: DK
authors.lastname: Kim
mesh_terms: D015746:Abdominal Pain / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000784:Aortic Dissection / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D000792:Angiography / Q000379:methods*; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D017538:Mesenteric Artery, Superior; D008875:Middle Aged; D012189:Retrospective Studies; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014652:Vascular Diseases / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D014656:Vascular Surgical Procedures / Q000379:methods*