Orthostatic Enlargement of a Supracerebellar Arachnoid Cyst With Cerebellar Descent Visualized by Upright Computed Tomography

Keisuke Yoshida, Masahiro Toda, Yoshitake Yamada, Minoru Yamada, Yoichi Yokoyama, Hirokazu Fujiwara, Kenzo Kosugi, Hikaru Sasaki, Masahiro Jinzaki

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Posterior fossa arachnoid cysts are often asymptomatic, but can rarely cause postural headache, the mechanism of which remains unknown. Case Description: We present a 40-year-old woman with an asymptomatic supracerebellar arachnoid cyst. Upright computed tomography (CT) showed enlargement of the arachnoid cyst and caudal descent of the cerebellum compared with supine CT with narrowing of the craniocervical junction cerebrospinal fluid space. Conclusions: This finding aids in understanding the association of posterior fossa arachnoid cysts with orthostatic headache. Clinicians should be aware of possible posture-related changes in intracranial structures.

Original languageEnglish
Pages (from-to)256-259
Number of pages4
JournalWorld neurosurgery
Volume145
DOIs
Publication statusPublished - 2021 Jan

Keywords

  • Arachnoid cyst
  • Cerebrospinal fluid
  • Chiari malformation
  • Postural headache
  • Upright CT

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology

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