title: [Endovascular treatment of ruptured and unruptured intracranial very small aneurysms].
abstract: OBJECTIVE
  To evaluate the feasibility and safety of endovascular treatment of ruptured and unruptured intracranial very small aneurysms (< or = 3 mm in maximal diameter).
  
  
  METHODS
  Forty-eight intracranial very small aneurysms in 44 patients treated with endovascular therapy from June 2001 to August 2009 were reviewed retrospectively in clinical, imaging, interventional and follow-up data. Among 44 patients, there were 20 males and 24 females with a mean age of 57.8 years old. The Hunt-Kosnik grade was as follows: Grade 0 (n = 11); Grades I & II (n = 23); Grades III & IV (n = 9); and ungraded (n = 1). The sizes of 48 aneurysms were not more than 3 mm in maximal diameter. The locations of aneurysms were as follows: ACoA (n = 11), MCA (n = 8), PCoA (n = 14), ICA (n = 12), pericallosal artery (n = 1), VA (n = 1) and PICA (n = 1). Thirty-nine aneurysms were embolized with coil, of which 13 with stent assistance and 6 by balloon remodeling technique. The other 9 aneurysms underwent sole stent placement in parent artery.
  
  
  RESULTS
  Among 39 coiling aneurysms, 100% occlusion was achieved in 9 aneurysms, 90% in 20, 80% in 9 and less than 80% in 1 respectively. Only one aneurysm ruptured during coiling. Two patients had transient hemiparesis and one patient had ataxia caused by bilateral cerebellar infarction postoperatively. All patients were clinically followed up for 4-90 months and no recurrent hemorrhage occurred. Thirteen patients received repeat angiography at 4-72 months post-treatment. And no radiological re-growth was detected.
  
  
  CONCLUSIONS
  Endovascular treatment of ruptured and unruptured intracranial very small aneurysms seems to be technically feasible, relatively safe and practically effective.
authors.affiliation: Department of Neurosurgery, Beijing Hospital, Beijing, China. daming2000@263.net
authors.forename: Da-ming
authors.initials: DM
authors.lastname: Wang
authors.forename: Jia-chun
authors.initials: JC
authors.lastname: Liu
authors.forename: Li-jun
authors.initials: LJ
authors.lastname: Wang
authors.forename: Jun
authors.initials: J
authors.lastname: Lu
authors.forename: Peng
authors.initials: P
authors.lastname: Qi
authors.forename: Le-le
authors.initials: LL
authors.lastname: Zhai
authors.forename: Xue-li
authors.initials: XL
authors.lastname: Jiang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001160:Arterioles / Q000293:injuries*; D004621:Embolization, Therapeutic / Q000379:methods*; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000473:pathology / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012421:Rupture; D016896:Treatment Outcome