Jugulo-tympanic paragangliomas are rare benign tumors arising from the neuroectodermal cells of tympanic cavity and dome jugular vein. Surgical resection has long been first-line treatment. However, when this is not possible, radiotherapy remains a therapeutic alternative allowing local control with less morbidity. We report case patient an unresectable tympano-jugular paraganglioma, symptomala...

During the breeding season, each tympanic membrane of males of the Old World treefrog Petropedetes parkeri is decorated with a single, prominent, fleshy tympanic papilla. The tympanic papilla, located dorsally on the tympanic membrane, is covered by an epidermal surface and is composed of non-ossified, spongiform tissue containing a number of globular, fluid-filled vesicles found at highest den...

OBJECTIVE To compare the incidence and localization of residual cholesteatomas in canal wall down tympanoplasty with soft-wall reconstruction with results with the canal wall down and open tympanoplasty or canal wall up tympanoplasty. DESIGN Retrospective case-series study. SETTING Tertiary care university hospital. PATIENTS Eighty-five patients (85 ears) with fresh extensive cholesteatom...

294 Objective: Keratin in the middle ear cavity is usually associated with the diagnosis of cholesteatoma currently explained by 3 mechanisms in the literature: retraction, squamous metaplasia and immigration. But different pathogenetic mechanisms cannot result in the same disease. The objective of this study is to show that immigration of the keratinizing epithelium of the tympanic membrane in...

A surgical technique for reconstruction of a well-ventilated middle ear space using tragal cartilage has been developed. Our technique was designed so as to secure an atticoantrum cavity and a complement of posterior tympanic annulus with a cartilage. This technique can be utilized in a radical mastoidectomy cavity at an original surgery and at a revision.

The diminutive middle ear ossicles (malleus, incus, stapes) housed in the tympanic cavity of the temporal bone play an important role in audition. The few known ossicles of Neandertals are distinctly different from those of anatomically modern humans (AMHs), despite the close relationship between both human species. Although not mutually exclusive, these differences may affect hearing capacity ...

BACKGROUND AND PURPOSE MR imaging is often used for detecting intracranial complications of acute mastoiditis, whereas the intratemporal appearance of mastoiditis has been overlooked. The aim of this study was to assess the imaging features caused by acute mastoiditis in MR imaging and their clinical relevance. MATERIALS AND METHODS Medical records and MR imaging findings of 31 patients with ...

OBJECTIVES We examined histopathologic and anatomical features of the guinea pig temporal bone and evaluated the differences and similarities with respect to the human ear. STUDY DESIGN Seventeen adult guinea pigs were deeply anesthetized with pentobarbital and then decapitated. Each temporal bone was removed and fixed in 10% formaldehyde for a week, then decalcified in 10% formic acid for th...

In this research, anatomical descriptions of the structure of the temporal bone and auditory ossicles have been performed based on dissection of ten guinea pigs. The results showed that, in guinea pig temporal bone was similar to other animals and had three parts; squamous, tympanic and petrous .The tympanic part was much better developed and consisted of oval shaped tympanic bulla with many re...