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Posterior fossa arachnoid cysts.

P Erdinçler1, M Y Kaynar, H Bozkus

  • 1Department of Neurosurgery, Istanbul University, Turkey. oymakas@superonline.com

British Journal of Neurosurgery
|September 24, 1999
PubMed
Summary

Symptomatic posterior fossa arachnoid cysts, often congenital, can be effectively treated surgically. Surgical intervention led to cyst reduction, symptom relief, and no recurrence in most patients.

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Area of Science:

  • Neurosurgery
  • Pediatric Neurosurgery
  • Neurology

Background:

  • Posterior fossa arachnoid cysts are rare, typically congenital lesions.
  • Symptomatic presentation often includes gait disturbances and headache.

Purpose of the Study:

  • To review surgical outcomes for symptomatic posterior fossa arachnoid cysts.
  • To discuss classification, pathophysiology, diagnosis, and treatment of these cysts.

Main Methods:

  • Retrospective review of 12 patients with posterior fossa arachnoid cysts.
  • Diagnosis confirmed via CT or MRI.
  • Surgical interventions included cyst wall excision with fenestration or shunting.

Main Results:

  • Post-surgical imaging showed cyst size reduction and cerebellar re-expansion.
  • Hydrocephalus resolved in cases with preoperative ventricular enlargement.
  • All surviving patients were symptom-free with no recurrence during 1-11 years follow-up.

Conclusions:

  • Surgical treatment is effective for symptomatic posterior fossa arachnoid cysts.
  • Procedures like fenestration and shunting yield favorable long-term outcomes.
  • Early diagnosis and surgical management are crucial for preventing cyst recurrence.

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