The retrolabyrinthine approach is classified among the posterior petrosectomies. Its goal to achieve an enlarged mastoidectomy while sparing intrapetrous neurotologic structures in order offer maximal exposure of cerebellopontine angle compound. stages procedure are subsequently skeletonization sigmoid sinus, wide opening mastoid antrum and semicircular canals. We present herein technique, indi...

INTRODUCTION Cholesterol granuloma is one of the most common abnormalities of the petrous apex. It is a benign slowgrowing expanding cystic mass that contains fluid, lipid, and cholesterol crystals and is surrounded by a fibrous lining. The granuloma arises from a pneumatized petrous apex that becomes obstructed. It most commonly arises from the central petrous apex; however, it has been found ...

INTRODUCTION This study aims to analyze our experience with petrous meningiomas (PM), testing the hypothesis that these tumors have different histologic subtypes and operative outcome depending on the site of origin in reference to the internal auditory canal (IAC). METHODS Fifty-eight patients with PM were reviewed retrospectively. Tumors were classified as posterior (PPM; n = 29), superior ...

BACKGROUND AND PURPOSE A temporal bone CT study in a patient with episodic mid-tone sensorineural hearing loss and tinnitus demonstrated absence of bone between the petrous internal carotid artery and the basal turn of the cochlea. The potential implications with respect to increasingly popular cochlear implant surgery compelled us to retrospectively analyze a series of temporal bone CT scans t...

Endolymphatic sac tumor (ELST) is a rare low-grade non-metastasizing adenocarcinoma of endolymphatic sac origin that arises in the petrous part of the temporal bone. Here we present a case of endolymphatic sac tumor of the head in a 53-year-old man who had symptoms in his left ear since 40 years ago after drowning and found a mass about 2 cm around his left ear 8 years ago, which grows slowly t...

Computed tomographic (CT) findings in 18 patients with temporal bone trauma were reviewed. Eight patients suffered longitudinal fractures of the petrous bone, which were associated with ossicular dislocation in two patients. Transverse fractures were detected in six patients, with a contralateral mastoid fracture in one patient. In four patients, the fractures were restricted to the mastoid reg...

A 40-year-old male presented with a cholesterol granuloma of the petrous apex manifesting as progressive hearing loss and tinnitus. The lesion was treated via an extradural middle cranial fossa approach employing a new procedure to establish a drainage pathway into the superior tympanic cavity which preserved his hearing. The pathway was formed by a groove 5 mm wide and deep in the anterolatera...