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Management of incidental unruptured intracranial aneurysms
  1. Shelley Renowden,
  2. Richard Nelson
  1. Department of Neurosurgery, Southmead Hospital, Bristol, UK
  1. Correspondence to Shelley Renowden; Department of Neurosurgery, Southmead Hospital, Bristol WC1H 9JR, UK; shelley.renowden{at}


The widespread use of MR has led to the increasingly frequent diagnosis of unruptured incidental intracranial aneurysms. Most are small (<7 mm diameter) and will never rupture. Yet, their recognition causes much anxiety, and their optimal management remains controversial. This review addresses the difficulties in managing incidental unruptured saccular intracranial aneurysms. Note that our conclusions and recommendations do not apply to symptomatic unruptured aneurysms or to fusiform, dissecting, mycotic, traumatic and paediatric aneurysms, each of which has a different natural history.

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  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Not required.

  • Provenance and peer review Commissioned. Externally peer reviewed by Teddy Wu, Christchurch, New Zealand.

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