File:Arachnoid cyst - middle cranial fossa (Radiopaedia 86780-102938 Axial DWI 5).jpg

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Arachnoid_cyst_-_middle_cranial_fossa_(Radiopaedia_86780-102938_Axial_DWI_5).jpg ‎(256 × 256 pixels, file size: 8 KB, MIME type: image/jpeg)

Summary:

Description
  • Radiopaedia case ID: 86780
  • Image ID: 54374967
  • Image stack position: 5/58
  • Plane projection: Axial
  • Aux modality: DWI
  • Study findings: A solitary elliptical-shaped well-defined, extra-axial CSF intensity mass lesion located in the left temporal fossa region. It follows CSF signals on all pulse sequences including FLAIR and no restriction is seen on diffusion-weighted imaging and ADC mapping. It causes mild chronic pressure effect over the left temporal lobe. Otherwise normal appearance of the cerebral hemispheres, corpus callosum, brain stem, posterior fossa, with preserved grey/white matter differentiation.
  • Modality: MRI
  • System: Central Nervous System
  • Findings: An elliptical shaped CSF density lesion is noted at the medial aspect of the left middle cranial fossa, displacing the left temporal lobe laterally suggestive of an arachnoid cyst. Otherwise, no acute traumatic brain injury could be detected.
Date Published: 19th Feb 2021
Source https://radiopaedia.org/cases/arachnoid-cyst-middle-cranial-fossa-12
Author Safwat Mohammad Almoghazy
Permission
(Permission-reusing-text)		 http://creativecommons.org/licenses/by-nc-sa/3.0/

Licensing:

Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)

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