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...

The migration of squamous epithelium of external ear through a tympanic membrane perforation into the middle ear forms a cholesteatoma. But it is extremely a rare condition to observe extensive cholesteatoma on the medial surface of tympanic membrane with perforation. This condition is termed tympanic membrane cholesteatoma (TMC). We herein present an exceptional case of extensive TMC with marg...

BACKGROUND Application of one or several paper patches on the tympanic membrane can improve autophony and other symptoms in some patients with a patulous eustachian tube. METHOD The charts of 21 patients treated for patulous eustachian tube syndrome between 2006 and 2011 were studied for subjective improvement of symptoms following the application of paper patches. RESULTS Paper patching of...

Multiple primary malignancies are not rare. While metachronous triple cancers are rare and a triple tumor case involving maxillary sinus and tympanic membrane is exceptionally rare. We present such an extremely rare case with the index tumor of adenoid cystic carcinoma of the maxillary sinus and 14 years later esophageal cancer was observed as a metachronous tumor. One year after esophageal can...

OBJECTIVE To assess the accuracy of the tympanic membrane thermometer for use with pregnant women. DESIGN Cross-sectional descriptive study. SETTING A major medical center in the midwestern United States. PARTICIPANTS Thirty-three hospitalized, afebrile pregnant women. MAIN OUTCOME MEASURES Tympanic membrane thermometers and glass mercury thermometers were used to measure body temperatu...

In this project we present two mathematical models for the human tympanic membrane. The eardrum can be viewed as an example of the vibrating drum problem. In the first model, we treat the tympanic membrane as a rectangular region. In the second model the tympanic membrane is considered as a disk. Both models use a wave equations. We study the impact of changes in the membrane tension related to...

(a) Tympanic membrane was taken as the site of recording temperature because it is having same arterial supply as that of hypothalamus–the thermoregulatory center. The tympanic membrane is supplied by maxillary artery and stylomastoid branch of occipital or the postauricular artery which are the branches of external carotid artery(2), whereas hypothalamus is supplied by branches of internal car...

INTRODUCTION THE tympanic membrane of the adult frog is divisible into three histologically distinct parts, viz. an inner epithelial layer, continuous with the mucous membrane of the tympanic cavity, the former being closely applied to a thin lamina propria conforming in shape and area to that of the annular tympanic cartilage to which it is attached at its peripheral borders. The third and out...

HYPOTHESIS Ossiculoplasty using prosthetic reconstruction with a malleus assembly to the stapes head will result in better transmission of vibrations from the eardrum to the stapes footplate than reconstruction with a tympanic membrane assembly to the stapes head. Both types of reconstruction will be affected by tension of the prosthesis. BACKGROUND Theories (and some clinical studies) that t...

OBJECTIVE A pressure equalization tube placed within the tympanic membrane is the only clinically available method for inhibiting tympanic membrane regeneration. Problems associated with this include associated otorrhea, biofilm formation, medial migration of the tube, tube retention, induction of granulation tissue, and a small but significant rate of cholesteatoma. We aimed to demonstrate tha...