Huge arachnoidal cyst with recent onset of seizure in an adult
Mohamed El Biadi, Salah Bellasri
Corresponding author: Mohamed El Biadi, Department of Radiology, Avicenne Military Hospital of Marrakech, Faculty of Medicine and Pharmacy of Marrakech, Cadi Ayyad University of Marrakech, Marrakech, Morocco
Received: 27 Dec 2022 - Accepted: 04 Jan 2023 - Published: 14 Jun 2023
Domain: Radiology,Neuroradiology
Keywords: Huge arachnoidal cyst, onset of seizure, adult, brain imaging
©Mohamed El Biadi et al. Pan African Medical Journal (ISSN: 1937-8688). This is an Open Access article distributed under the terms of the Creative Commons Attribution International 4.0 License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Cite this article: Mohamed El Biadi et al. Huge arachnoidal cyst with recent onset of seizure in an adult. Pan African Medical Journal. 2023;45:84. [doi: 10.11604/pamj.2023.45.84.38644]
Available online at: https://www.panafrican-med-journal.com//content/article/45/84/full
Huge arachnoidal cyst with recent onset of seizure in an adult
Mohamed El Biadi1,&, Salah Bellasri1
&Corresponding author
A 68-year-old right-handed man, having consulted for the occurrence of a first epileptic seizure. Brain computerized tomography (CT) scan and magnetic resonance imaging (MRI) showed a giant congenital supratentorial arachnoidal cyst occupying the anterior two-thirds of the right hemisphere, measuring 14.09x6.07 (APxT) cm and 11.67 cm high, compressing the right cerebral hemisphere and the right cerebral peduncle with a midline shift. Arachnoidal cysts are congenital malformations containing cerebrospinal fluid. They may be asymptomatic and discovered incidentally on imaging. When they are large, as in this patient, they can cause a mass effect.
Figure 1: magnetic resonance imaging of the brain (axial T1-weighted: A) and coronal T2-weighted; B) cerebral computerizing tomography scan in spontaneous contrast, sagittal section; C) huge compressive arachnoidal cyst of the non-dominant hemisphere