File:Cholesterol granuloma of the petrous apex (Radiopaedia 64358-73140 Axial TOF 3D 61).jpg

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Cholesterol_granuloma_of_the_petrous_apex_(Radiopaedia_64358-73140_Axial_TOF_3D_61).jpg ‎(512 × 512 pixels, file size: 32 KB, MIME type: image/jpeg)

Summary:

Description
  • Radiopaedia case ID: 64358
  • Image ID: 43819056
  • Image stack position: 61/82
  • Plane projection: Axial
  • Aux modality: TOF 3D
  • Modality: MRI
  • System: Head & Neck
  • Findings: There is an expansive formation (3 centimeter) arising from the apex of the petrous bone on the left side. The lesion shows homogeneous signal, hyperintense in T1 and T2, hyperintense in the sequences with saturation of the fat signal, poor peripheral enhancement in relation to the presence of proteinaceous material inside. Superiorly it is limited by the Meckel cave, which appears slightly imprinted, posteriorly obliterates the medial portion of the internal auditory canal and, reshaping the neighboring osseous structures, protrudes into the cisterna of the cerebellopontine angle. Anteriorly it comes into contact with the carotid siphon while inferiorly it occupies the jugular foramen. Hyperintense material on T2 obliterates mastoid cells and there tubal casing from tubal blockage.
Date Published: 19th Nov 2018
Source https://radiopaedia.org/cases/cholesterol-granuloma-of-the-petrous-apex
Author Domenico Nicoletti
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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current02:39, 13 August 2021Thumbnail for version as of 02:39, 13 August 2021512 × 512 (32 KB)Fæ (talk | contribs)Radiopaedia project rID:64358 (batch #7706-170 E61)

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