Prenatal diagnosis of arachnoid cysts: MRI features and neurodevelopmental outcome

Orr Yahal, Eldad Katorza, Elad Zvi, Michal Berkenstadt, Chen Hoffman, Reuven Achiron, Omer Bar-Yosef

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: Arachnoid cysts (AC) are congenital lesions comprising 1% of all intracranial mass lesions. The aim of this study was to characterize arachnoid cysts and their neurodevelopmental outcome and to compare it with the outcome of children without AC. Methods: This is a retrospective cohort study of arachnoid cysts detected prenatally by fetal MRI in 29 fetuses compared to a control group of 59 fetuses without arachnoid cyst who were examined by MRI. The cohort was investigated from two different angles: anatomical and developmental. Anatomical analyzation, the cohort was divided into 2 groups by the arachnoid cyst anatomical location: group A (n = 9), which included cases with supratentorial cyst, and group B (n = 20), which included cases with infratentorial cyst. Developmental analyzation, the cohort was divided into 2 groups by the neurodevelopmental outcome: group γ (n = 5) which included cases that were affected by arachnoid cyst presence, and group δ (n = 17) which included cases that had neurodevelopmental outcome within the normal range. Data collected included prenatal history, MRI features, sonographic follow up, and neurodevelopmental outcome. Results: In 22/29 cases we achieved a long-term follow up, by evaluation of children development in a range of ages from 6 months to 6 years. In group A (n = 9), 4 infants had normal outcome, 2 had abnormal outcome, 1 pregnancy was terminated, and 2 cases were not cooperative with the study. In group B (n = 20), 13 infants had normal outcome, 3 had abnormal outcome, and 4 cases were not cooperative with the study. Conclusions: From all cases with AC detected by fetal MRI, 77.3% had normal neurodevelopmental outcome and 22.7% had abnormal neurodevelopment.

Original languageEnglish
Pages (from-to)232-237
Number of pages6
JournalEuropean Journal of Radiology
Volume113
DOIs
StatePublished - Apr 2019

Keywords

  • Arachnoid cyst
  • Fetal brain
  • Infratentorial cyst
  • MRI
  • Neurodevelopmental outcome
  • Supratentorial cyst

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