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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.
Summary
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.