An osteoma of the temporal bone is a rare benign tumor. External auditory canal is the most common site of osteomas arising from temporal bone, and mastoid osteoma is very rare. A case of a 42-year-old female with a huge osteoma which developed from mastoid cortical bone is presented and the review of the temporal bone osteomas is discussed. The patient showed a huge and hard mass in the right ...

BACKGROUND Advanced parotid cancers more than 4 cm are firmly fixed around the main trunk of the facial nerve that can be hardly detected in narrow working space between mastoid process and parotid cancer. Even though facial nerve was preserved, facial nerve stretching during surgery has significantly serious effect on postoperative facial palsy. OBJECTIVE To evaluate usefulness of removing m...

abstract background: the gamma knife radiosurgery (gkr) is an established management option for cerebral ar-teriovenous malformations (avms). therapeutic benefits of radiosurgery for arteriovenous malformations are complete obliteration of nidus with minimal neurological deficit. methods: radiosurgery was performed between february 2003 and april 2010 at kamraniye day clinic, teh-ran, iran, usi...

Learning Objectives: Recent studies on the mastoid structure and function has pointed to an important role in middle ear physiology. The normal function of the middle ear depends on regulation of its pressure relative to ambient pressure, and traditionally gas exchange between the middle ear mucosa and gas pocket has been focused on together with the function of the Eustachian tube. However, re...

OBJECTIVES To retrospectively evaluate our experience with frontal sinus obliteration using hydroxyapatite cement (BoneSource; Stryker Biotech Europe, Montreux, Switzerland) and compare it with fat obliteration over the approximate same period. Frontal sinus obliteration with hydroxyapatite cement represents a new technique for obliteration of the frontal sinus after mucocele resection. METHO...

conclusions in surgery for facial nerve neuroma in the mastoid segment, it is better not to rely on imaging alone; all facial nerves from the geniculate ganglion to the styloid foramen become exposed for tumor removal. case presentation in this report, we describe a rare facial nerve neuroma in the mastoid portion in a 55-year-old man with a history of hypertension (htn) and diabetes mellitus (...

We present a procedure for the segmentation of the mastoid a sponge-like bone structure behind the middle ear from CT Images. This segmentation is a first pre-operative step for a robot-supported hearing aid implantation. Up to now, the mastoid is milled out by an ENT surgeon to allocate space for the hearing aid. This tedious milling process of the mastoid is intended to be performed by a robo...

OBJECTIVE To provide a detailed anatomic description of middle ear endoscopy via different approaches. METHOD Using 0, 30 and 90 degree rigid endoscopes, 6 dry temporal bones and 11 temporal bone blocks were examined to define the average range of view obtained by three approaches: 1. via the external ear canal approach; 2. via a retroauricular incision: including two subdivided routes, the m...