title: The analysis of long-term follow-up screening in patients with surgically treated intracranial aneurysms.
abstract: OBJECTIVE
  To understand the late anatomical results of surgically treated intracranial aneurysms (IA's) and to investigate the incidence of recurrent, de novo aneurysms, the natural history of residual aneurysms, and the morphological changes in temporarily clipped vascular segments.
  
  
  METHODS
  A total of 117 patients underwent screening with digital subtraction angiography (DSA) or computed tomographic angiography (CTA) in a range of 3 - 13 years. Late angiographies were evaluated in terms of recurrence, change in known residua, the presence of de novo aneurysms and the morphological changes in temporarily clipped vessels. We also analysed the cumulative data including previously published results.
  
  
  RESULTS
  In the long-term DSA, three residual aneurysms were observed to be enlarged while four remnants showed no morphological change. In one patient, spontaneous obliteration was seen. No recurrent aneurysm was detected. One de novo aneurysm was observed. We did not find any morphological change in 71 temporarily clipped vascular segments.
  
  
  CONCLUSIONS
  Our data demonstrates that completely occluded aneurysms could remain stable even years later. Most of the small neck residues appeared to remain unchanged or even be thrombosed but they should be carefully followed. The incidence of de novo aneurysms might be expected to be lower.
authors.affiliation: Akdeniz University, School of Medicine, Department of Neurosurgery, Antalya, Turkey.
authors.forename: Ethem
authors.initials: E
authors.lastname: Goksu
authors.forename: Emre
authors.initials: E
authors.lastname: Korkmaz
authors.forename: Mahmut
authors.initials: M
authors.lastname: Akyuz
authors.forename: Ozhan
authors.initials: O
authors.lastname: Ozgur
authors.forename: Timur
authors.initials: T
authors.lastname: Sindel
authors.forename: Recai
authors.initials: R
authors.lastname: Tuncer
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction / Q000379:methods; D002533:Cerebral Angiography / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D013997:Time Factors; D055815:Young Adult