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Huge arachnoid cyst incorporating choroid plexus

Hideo Hamada1, Yuichiro Nonaka, Yasuko Kusaka

  • 1Division of Pediatric Neurosurgery, Jikei Women's and Children's Medical Center, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Tokyo 105-8461, Japan.

Child'S Nervous System : Chns : Official Journal of the International Society for Pediatric Neurosurgery
|June 4, 2005
PubMed

Insights

This rare case details a 7-month-old with macrocrania, revealing an arachnoid cyst containing choroid plexus. Neuroendoscopy confirmed this unique finding, leading to an uneventful recovery.

Area of Science:

  • Pediatric Neurosurgery
  • Neuroimaging
  • Cystic Lesions

Background:

  • A rare case of arachnoid cyst incorporating choroid plexus is presented.
  • A 7-month-old infant with macrocrania was diagnosed via magnetic resonance (MR) imaging.

Observation:

  • The MR imaging revealed a cystic lesion in the left prepontine cistern extending to the left middle cranial fossa.
  • Initial surgical resection of the arachnoid cyst membrane resulted in temporary size reduction.

Findings:

  • The cyst recurred and enlarged 4 months post-surgery, necessitating further intervention.
  • Neuroendoscopic transcortical ventriculo-cyst-cisternostomy confirmed the presence of choroid plexus within the arachnoid cyst.

Implications:

  • This is the first reported case of choroid plexus within an arachnoid cyst.
  • Neuroendoscopy proved effective for diagnosis and management of this rare condition.
Abstract

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