What Is Tegmen Dehiscence?

Tegmen dehiscence
The tegmen is the roof of the mastoid sinus. It lies between the brain and the open space of the mastoid cavity. It is very well established that patients with SCD on temporal bone CT, frequently have thin or no bone at all between the mastoid cavity and the dura of the brain.

What is a tegmen defect?

A tegmen tympani defect is a tear in either the right or left side of the tegmen tympani, or the roof of the middle ear, which disrupts communication between the intracranial and extracranial sections. Any delay in diagnosis increases the risk of seizures, meningitis, encephalitis, or cerebral abscess.

What is tegmen tympani dehiscence?

Dehiscence of the tegmen tympani or mastoidium is often associated with pulsatile tinnitus and may be secondary to prior surgery, chronic otitis media, and may be associated with encephalocoeles, and CSF leaks.

Sarah Jenkins

Sarah Jenkins

Senior Technology Editor & AI Specialist

Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.