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CC BY-NC-ND 4.0 · Asian J Neurosurg 2022; 17(04): 676-679
DOI: 10.1055/s-0042-1757223
Case Report

Postnatal Posterior Fossa Arachnoid Cyst: A Developmental Etiology to Be Considered

Thiynesvaran Ramachandran
1   Division of Neurosurgery, Department of Surgery, University of Malaya, Kuala Lumpur, Malaysia
,
Vijayan Valayatham
2   Fetal Medicine Unit, Aseana O&G Specialist Clinic, Kuala Lumpur, Malaysia
,
Dharmendra Ganesan 
1   Division of Neurosurgery, Department of Surgery, University of Malaya, Kuala Lumpur, Malaysia
› Institutsangaben Funding None.
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Abstract

Intracranial arachnoid cyst is the most common cystic congenital anomaly in the brain. In this study, we discuss a pregnancy that had serial fetal ultrasound scans throughout the pregnancy and a fetal anomaly scan at 24 weeks of gestation that was normal. The child was born healthy with normal development, but 12 months onward the head began to enlarge. The magnetic resonance imaging of the brain showed a large posterior fossa arachnoid cyst with hydrocephalus. We discuss the postulation to explain this pathogenesis of the cyst. This case highlights that not all symptomatic arachnoid cysts are congenital despite the manifestation being as early as infancy.

Keywords

posterior fossa arachnoid cyst - fetal ultrasound - arachnoid cyst - pathogenesis - acquired - congenital

Supplementary Material



Publikationsverlauf

Artikel online veröffentlicht:
28. Oktober 2022

© 2022. Asian Congress of Neurological Surgeons. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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