نتایج جستجو برای: tympanic membrane
تعداد نتایج: 390272 فیلتر نتایج به سال:
Tympanoplasty performed using 270 degree subannular flap has shown better success rates. This technique is quite useful for large subtotal tympanic membrane perforations. case report successfully demonstrated the feasibility of performing this difficult surgical endoscopically and thus avoiding a post auricular scar reducing morbidity to patient.
A 40-year-old woman was referred by her primary care physician for evaluation after a routine physical exam revealed bilateral brownish pigmentation of the tympanic membrane. Head and neck examination in the otolaryngology clinic revealed bluish hue of both sclera, teeth, and portions of her pinnae. A hearing test revealed bilateral mild sensorineural hearing loss. The patient had a history of ...
We investigated the feasibility of using laser tissue welding techniques to perform transcanal underlay tympanoplasty. We used 10 temporal bones obtained from human cadavers. After creating a subtotal tympanic membrane perforation, we introduced harvested periosteum through the perforation and used laser tissue welding to secure the periosteum graft in place in an underlay fashion. The procedur...
The tympanic membrane in mammals is a trilaminar structure formed by the apposition of two epithelial cell layers, along with an intervening layer of cells derived from pharyngeal arch mesenchyme. One epithelial layer is contributed by the external acoustic meatus, a derivative of the first pharyngeal cleft. The other epithelial layer is contributed by the tubotympanic recess, a derivative of t...
Cavernous hemangioma seems to most frequently arise in the posterior portion of the external auditory canal. However, they rarely occur in the tympanic membrane. A 49-year-old male patient was referred for evaluation of right-sided pulsatile tinnitus that he'd experienced for the previous 2 years. Temporal bone computerized tomography showed an isolated soft tissue mass just lateral to the tymp...
Materials & Methods; Retrospective evaluation of selected cases operated by the same surgery team between 2000 and 2008. A total of 307 patients with a tympanic membrane perforation or retraction due to chronic otitis media were treated surgically with tympanoplasty with or without mastoidectomy. From these 96 cases who had primary repair of tympanic membrane perforation or retraction with inta...
This experiment investigated the accuracy with which the location of a probe tip relative to the tympanic membrane can be estimated by means of standing waves. The ear canal length of each ear of six adult subjects was measured with a probe tube using a tactile method. A 6-kHz warble tone was then generated, and the position of the standing wave notch in the ear canal was determined using a pro...
Intramembranous tympanic membrane cholesterol granuloma (CG) occurs infrequently. Here, the authors report a case of CG in the tympanic membrane presenting as a blue eardrum in the right ear. In addition, a pinhole perforation noted in the anterosuperior area revealed a brown discharge. High-resolution temporal bone CT showed a bulging mass shadow in the middle ear and a soft tissue dense lesio...
Central nervous system (CNS) involvement by chronic lymphocytic leukemia (CLL) can present with dramatic neurologic findings or can be quite subtle, discovered only at the time of autopsy. We describe a case of CLL in a patient who presented initially with hearing loss and was ultimately found to have involvement of the tympanic membrane. She noted improvement of her hearing after induction the...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید