[Studies of labyrinthine cholesteatoma-related fistulas: report of 22 cases].

Objective: To study the incidence, location, pre- and postoperative symptoms (hearing loss, tinnitus, vertigo, facial palsy), preoperative diagnostic imaging, and surgical treatment of labyrinthine fistulae (LF).

Design: Retrospective case review.

Patients: Twenty-two cases of LF over 382 mastoid operations performed in a 168-month period.

Experimental model for investigating trans-mucosal gas exchanges in the middle ear of the rat.

Objective: The total pressure in the middle ear depends on the air composition of this gas pocket, i.e. on gas exchanges occurring through either the Eustachian tube (ET) or mucosa.

Spontaneous intracranial hypotension: a rare cause of labyrinthine hydrops.

Spontaneous intracranial hypotension should be considered as a possible cause of cochlear hydrops. We report a case of unilateral hearing loss attributed to spontaneous intracranial hypotension on the basis of characteristic abnormalities seen on magnetic resonance imaging. The diagnostic gold standards for intracranial hypotension are lumbar measurement of cerebrospinal fluid pressure and magnetic resonance imaging.

A rare clival and sellar fracture with pneumatocephalus.

We present a case of clival and sellar complex fracture produced by an indirect mechanism. This previously healthy patient had an occipital trauma followed by epistaxis. CT showed a clival and sellar fracture with pneumatocephalus.