Petro-trigeminal Line and Petrous Apex Cephaloceles

University Hospital, Strasbourg, France209 enrolled

Overview

cephaloceles are rare lesions of the petrous apex, inconsistently listed as meningoceles or arachnoid cysts. They're consistent with a herniation posterolateral of the Meckel cavum within the petrous apex. These lesions may be the cause of a symptomatology varied, or be discovered by chance in subjects who have not been asymptomatic. Currently, there is no evidence in the literature a simple, fast and reproducible radiological marker that allows for the diagnosis of cephaloceles of the petrous apex, in particular the small ones. The purpose of this study is to validate a radiological benchmark simple and reproducible, the trigeminal petrol line, in order to improve the diagnosis of petrous apex cephaloceles

Study Type

OBSERVATIONAL

Enrollment

209

Conditions

Petrous Apex Meningioma

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion criteria: * Major subjects (≥18 years old) * patients who underwent an MRI with high resolution 3D T2 sequence between 01/01/2003 and 09/31/2020: * 200 patients consulting for ENT pathology such as vertigo * 9 patients presenting the radiological criteria in MRI of a cephalocele of the petrous apex according to the current data of the literature on a T2 3D HR sequence * \- Subject who has not expressed his opposition, after being informed, to the reuse of his data for the purposes of this research. Exclusion criteria: * Subject who expressed their opposition to participating in the study * Kinetic Artifacts * Subject under guardianship or curatorship * Subject under safeguard of justice

Locations (1)

Outcomes

Primary Outcomes

Validate a radiological landmark allowing MRI diagnosis cephaloceles of the petrous apex

This mark corresponds to the projection of a line drawn on an axial section, in the plane of the posterior roots of the trigeminal nerves, between the anterior and external edges of the petrous apex along the petro-trigeminal angle on each side.

Time frame: Files analysed retrospectively from from January 01, 2003 to September 31, 2020 will be examined