During a period of six years, eleven cases, (involving sixteen ears), of osteomyelitis temporalis chronica (otitis media in the broad sense) with cholesterin granuloma, accompanied by experimented studies of cholesterin granuloma in the tympanic cavity of rabbits were reported. Cholesterin granuloma appeared in the tympanic cavity of the rabbits after instilation of a 1 solution of oxalic acid ...

Malignancy of the middle ear and mastoid antrum is rare. These malignancies are less than 1%of all head-andneck malignancies. Squamous cell carcinoma is the most common among all malignant tumours. Squamous cell carcinoma of the middle ear and chronic suppurative otitis media may co-exist but no definitive correlation has been proven. Here we are presenting a case of squamous cell carcinoma of ...

INTRODUCTION A chronic discharging ear has been a challenge for the otologists for centuries. The mainstay of treatment for cholesteatoma is surgery and the surgical treatment of choice is modified radical mastoidectomy. The open mastoidectomy technique has been the mainstay of management of chronic ear disease; however this type of surgery is not without its problem. It results in the formatio...

To further elucidate nuances of bone-conduction (BC) stimulation, particularly as they may pertain to BC-elicited auditory brainstem responses (ABRs), real head measurements were made of vibratory responses to BC clicks. A miniature accelerometer was held firmly against the skull near a bone vibrator applied to the mastoid, to the opposite mastoid, and to the forehead. Measurements also were ma...

It is well known that the skull provides elements for sex identification. Twenty-two bones form the cephalic cranium and they are divided into neurocranium and splancnocranium. This research aimed to study different characteristics between skulls from both sexes by evaluating the following measurements: mastoid notch to incisive foramen (right and left side); mastoid notch to mastoid notch; and...

The mastoid air cell system has traditionally been considered to have a passive role in gas exchange and pressure regulation of the middle ear possibly with some acoustic function. However, more evidence has focused on the mucosa of the mastoid, which may play a more active role in regulation of middle ear pressure. In this study we have applied micro-CT scanning on a series of three human temp...

BACKGROUND AND PURPOSE The mastoid portion of the temporal bone has multiple functional roles in the organism, including regulation of pressure in the middle ear and protection of the inner ear. We investigated whether mastoid pneumatization plays a role in the protection of vital structures in the temporal bone during direct lateral trauma. MATERIAL AND METHODS The study was performed on 20 ...

OBJECTIVE We sought to assess the complication rates following cochlear implantation in canal wall down mastoid cavities in adults and children. DATA SOURCES A systematic review of English articles from PubMed, Web of Science, EMBASE, and the Cochrane Library. Additional studies were identified by reviewing the reference lists of the originally identified studies. REVIEW METHODS Studies wer...

BACKGROUND This report compares the different surgical methods for large and pneumatized mastoid cavity (large cavity) and small and poorly pneumatized mastoid cavity (small cavity) cholesteatomas and their results for the facial nerve and mastoid cavity. METHODS In the period from January 1996 to December 2000, 101 ears with cholesteatomas underwent tympanoplasty with mastoidectomy. In the l...