title: Transcatheter arterial embolization for segmental arterial mediolysis.
abstract: OBJECTIVE
  To report outcomes of transcatheter arterial embolization for segmental arterial mediolysis (SAM), a vascular disorder characterized by angiographically documented fusiform aneurysms separated by areas of normal appearing vessel in the celiac or mesenteric arteries.
  
  
  METHODS
  Four patients (3 men; median age 70 years, range 57-77) had a presumptive diagnosis of SAM; the possibility of vasculitis was ruled out based on clinical and laboratory findings. Three patients were symptomatic, with aneurysm rupture; the fourth patient was diagnosed incidentally. Coil embolization was used in 3 cases and N-butyl cyanoacrylate in the other. There was no re-rupture. One patient developed a focal dissection of the superior mesenteric artery 9 months after middle colic artery embolization. Another patient died of perforation of the lower gastrointestinal tract 3 months after treatment, but the cause was unknown; mesenteric ischemia from embolization and arteriopathy could not be ruled out.
  
  
  CONCLUSIONS
  Transcatheter embolization is useful for SAM. However, it is likely that the morphology associated with SAM transforms rapidly, so patients undergoing mesenteric artery embolization should be monitored at short intervals.
authors: Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan. m_shimohira@yahoo.co.jp
authors: Masashi
authors: M
authors: Shimohira
authors: Hiroyuki
authors: H
authors: Ogino
authors: Shigeru
authors: S
authors: Sasaki
authors: Kiichi
authors: K
authors: Ishikawa
authors: Masashi
authors: M
authors: Koyama
authors: Kenichi
authors: K
authors: Watanabe
authors: Yuta
authors: Y
authors: Shibamoto
mesh_terms: D000368:Aged; D000792:Angiography; D001158:Arteries / Q000473:pathology*; D004621:Embolization, Therapeutic / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014652:Vascular Diseases / Q000473:pathology* / Q000628:therapy*