Human middle-ear is the key component of the auditory system. Its function is to transfer the sound waves through the ear canal to provide sufficient stimulus to the fluids of the inner ear. Degradation of the ossicles that transmit these sound waves from the eardrum to the inner ear leads to hearing loss. This problem can be overcome by replacing one or more of these ossicles by middleear pros...

OBJECTIVE. In children aged less than 10 years, to assess whether adenotonsillectomy has some permanent or transitory effect on middle ear pressure. MATERIAL AND METHODS. 20 children aged 4 to 9 years old (13 girls and 7 boys) participated in the study. The day before surgery and on days 1, 7, 14 and 21 after adenotonsillectomy both tympanometry and pure tone audiometry were performed. During s...

INTRODUCTION Middle ear glandular neoplasms are infrequent causes of a middle ear mass. They can have exocrine and/or neuroendocrine differentiation. It is currently thought that these tumors are indistinguishable each from another. Herein, we present a new case of a middle ear glandular neoplasm. Our objective is to review all cases described in the literature in order to identify the clinical...

The main function of the middle ear is well-known. It serves as a mechanical transformer, designed for transmission of acoustic energy from the external air to the cochlea fluids. In the absence of such energy transformer of the vibrational motion of air particles will be reflected at the on the border with the labyrinth fluid. The appearance of the corresponding mechanical amplification leads ...

Tympanograms for probes ranging from 250 through 2000 Hz were evaluated for 467 older adults. Measures of middle ear resonant frequency were compared across age groups (48-59, 60-69, 70-79, 80-90 years) and gender. No significant age group trends were observed for middle ear resonant frequency. Middle ear resonant frequencies were significantly higher for older women than for older men, but the...

OBJECTIVE Reversion-inducing cysteine-rich protein with kazal motifs (RECK) may negatively regulate matrix metalloproteinase 9 (MMP9) activity and suppress tumor invasion and metastasis. The aim of this study was to investigate whether RECK and MMP were involved in regulating middle ear carcinoma invasion and metastasis. METHODS RECK and MMP9 were measured in 30 middle ear squamous cell carci...

The most common middle ear diseases are otitis media with effusion (OME), acute otitis media (AOM) and chronic suppurative otitis media (CSOM)). Diagnosing middle ear disease is based mainly on inspection of the tympanic membrane (TM) and indirect measurements of the status of the middle ear. (Tables 1, 2; Figure 1) To improve diagnostic accuracy in general practice the important factors are as...