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| Name | Petrous Apex Cephalocele |
| Video Uploader | Video From JOAO Nogueira |
| Upload Date | This Video Uploaded At 06-02-2016 12:19:00 |
| Video Discription | www.sinuscentro.com.br - Petrous apex cephaloceles are rare lesions representing protrusions of arachnoid or dura mater, usually from the Meckel cave, into the petrous apex. They are thought to be caused by chronically increased intracranial pressure that is transmitted into the Meckel cave through a patent porus trigeminus. Petrous apex cephaloceles are associated with empty sella and Usher syndrome, are usually bilateral, and occur more often in women than in men. The lesions may be incidental findings but occasionally may erode into the otic capsule or pneumatized petrous apex cells, resulting in headaches, hearing loss, or CSF otorrhea. At imaging, petrous apex cephaloceles are situated just above the anterior petrous apex and are continuous with the Meckel cave. They are smoothly marginated and have the same signal intensity characteristics as CSF with all MR imaging sequences. CT may show extensive nonaggressive erosion of the petrous apex with a smooth or scalloped border. Obliteration of the cyst cavity with fat or muscle is recommended for symptomatic lesions, and serial imaging is used for asymptomatic lesions. |
| Category | Education |
| Tags | Petrous apex | Cephalocele | Petrous apex endoscopic management | Petrous apex transnasal surgery |
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