A rare case of tri-compartmental arachnoid cyst spanning the infra-tentorial, supra-tentorial and extra-cranial compartment and presenting as posterior parietal meningocele.

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A rare case of tri-compartmental arachnoid cyst spanning the infra-tentorial, supra-tentorial and extra-cranial compartment and presenting as posterior parietal meningocele.

World Neurosurg. 2018 Apr 23;:

Authors: Anbazhagan S, Kadhao AV, A S R, Shariff MU

Abstract
Arachnoid cysts constitute mere 1% of all the non-traumatic intracranial space occupying lesions and only 10% of these are present in the infra-tentorial compartment. We hereby report a case of a ten month-old female child with a tri-compartmental arachnoid cyst. It spanned both the infra-tentorial and supra-tentorial compartment of the intracranial space. In addition to this, it was also herniating into the extra-cranial compartment through a congenital defect in the parietal bone. The child was brought to us with a disfiguring swelling over her scalp which was progressively increasing in size. We managed the patient by excision of the extra-cranial part and placed a cysto-peritoneal shunt to take care of the intracranial part. A follow-up Magnetic Resonance Imaging (MRI) after 6 months of intervention showed a significant reduction in the size of the intracranial portion of the cyst with no recurrence of the extra-cranial part.

PMID: 29698795 [PubMed - as supplied by publisher]

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