摘要:

xsOur experience in surgical treatment of 105 patients with cerebellopontine angle tumors is reported. Major emphasis is placed on a combined surgical approach and use of the CO2laser. Our approach to diagnosis is also emphasized, as is the method we have used in compiling and collecting the data resulting from the study. Postoperative results and complications are reported and discussed.

ISSN:0192-9763    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

This study attempts to establish clinical criteria that would enable physicians to decide which patients with sudden cochlear and vestibular symptoms should be explored surgically in search of a perilymphatic fistula, in the absence of history indicating trauma to the inner ears. For this purpose, we studied forty-five patients whom we operated on because of suspected perilymphatic fistulas. The patients were divided into two groups: Group A (twenty patients) had previously undergone stapedectomy. Group B (twenty-five patients) had not undergone surgery in the past. Most of our patients experienced a rather acute onset of vertigo, unsteadiness, hearing loss, and tinnitus.We found no significant difference in the symptoms or signs between the patients who had a fistula and those in whom a fistula was not found, nor between those who underwent stapedectomy previously and those who did not. Most of the patients in Group B (75 percent) with fistula did, however, have a history of some stress or trauma preceding the sudden onset of symptoms. Yet some did not. We had three patients with no such history, nor had they undergone a previous stapedectomy. Basically, we are left with a dilemma: whether or not to explore a particular ear with appropriate symptoms and signs but without a traumatic history-knowing that about a quarter of these patients may have a perilymphatic fistula.

ISSN:0192-9763    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

The Klippel-Feil syndrome is characterized by a short, thick neck with restricted head mobility and a low occipital hairline. The head appears to rest directly on the thorax and the trapezius muscles flare out on either side of the neck, producing a pterygium-like effect. Cervical roentgenograms demonstrate fusion of some or even all of the vertebral bodies into bony blocks. Ear deformities occur in approximately one-third of the Klippel-Feil patient population.We report five cases of Klippel-Feil syndrome and describe their otologic and roentgenographic features. Although no single characteristic otologic or audiologic problem is identified, a proclivity for major malformations of involved ears is demonstrated. Early audiometric and otologic evaluation is indicated when the diagnosis of Klippel-Feil syndrome is made.

ISSN:0192-9763    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

According to a current theory about the pathogenesis of Bell's palsy, the motorfibers of the facial nerve are affected by a viral neuropathy, transmitted to the facial nerve via the axons of the chorda tympani nerve. We have used horseradish peroxidase (HRP) to test to what extent and under what conditions uptake and transport of macromolecules can take place from the tongue. When HRP was applied directly onto the mucosa, no labeling was observed. However, when applied to localized superficial lesions of the epithelium or injected into the tongue, HRP is transported retrogradely to the geniculate and trigeminal ganglia, superior salivatory and hypoglossal nuclei. Injection of HRP resulted in many more labeled cells as well as fiber labeling in the peripheral nerves, in the solitary and spinal trigeminal nuclei. The findings show that even after a minor superficial lesion in the tongue, exogenous macromolecules are taken up and transported to the intratemporal portion of the facial nerve as well as other cranial nerves. These findings are compatible with the theory that Bell's palsy is a neuropathy caused by neurotropic viruses spread via the chorda tympani.

ISSN:0192-9763    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

Hemangiomas involving the posterior bony external auditory canal and adjacent tympanic membrane, although rare, do appear to be a specific disease entity of the human external auditory canal. To date it has been reported in two males in their sixth decade of life. This third case in the world literature, which is reported here, appears to confirm the original description of Freedman and colleagues in 1972.Total surgical excision with tympanic membrane grafting appears to be effective in removal of this benign neoplasm.

ISSN:0192-9763    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

Plasti-Pore (high density polyethylene) and Proplast (polytetrafluoroethylenecarbon fiber composite) are porous materials that have been employed for the fabrication of ossicular replacement prostheses. Despite many years of clinical experience with these otologic implants, questions remain regarding the tissue response elicited by these materials in the middle ear. The objective of this study was to evaluate histologically the tissue response to Plasti-Pore and Proplast implants in the middle ears of cats through one year of implantation.Plasti-Pore and Proplast total ossicular replacement prostheses, trimmed to “T” shapes, were inserted in fourteen cats, replacing the superstructure of the stapes. One Plasti-Pore and one Proplast implant were implanted in each animal. Cats were killed after two weeks, one, three, and six months, and one year.The histologic response to the Plasti-Pore and Proplast implants was similar. A fibrous capsule contained within a flattened epithelial cell sheath enveloped both types of implants. The mucosa enveloping the devices was continuous with the lining of the tympanic cavity and served to stabilize the implants. Fibrous tissue from the capsule infiltrated larger surface pores. Multinucleated giant cells and macrophages were the predominant cell types in the porosity of both types of implants. The relatively small pores of the devices did not appear to be able to accommodate both the phagocytic cells, which were responding to the particulate features of the materials, and fibrous tissue.

ISSN:0192-9763    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

Over 250 reports concerning or related to Meniere's disease, published in English from 1978 through 1982, are summarized. Reports have been classified into the categories of incidence of occurrence, analysis and reporting results, patho-physiology, etiologic theories, diagnostic methods, medical management, and surgical procedures. Major emphases in reporting from 1978 though 1982 have been in the areas of pathophysiologic studies, expansion of diagnostic procedures, and the use of sac decompression and neurectomy procedures. This literature review reveals the continuing disagreement regarding the pathophysiology of Meniere's disease and the resultant continued controversies in its management.

ISSN:0192-9763    

出版商:OVID    

年代:1983

数据来源: OVID

ISSN:0192-9763    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

Doctors' Discussion is a regular feature ofThe American Journal of Otologyand represents a summary of an actual Thursday evening discussion at the Otologic Medical Group (OMG) in Los Angeles. The following discussion was taped on February 17, 1983. Present for the discussion were William F. House, M.D., James L. Sheehy, M.D., Fred H. Linthicum, M.D., Derald E. Brackmann, M.D., Antonio De La Cruz, M.D., John W. House, M.D., Ralph A. Nelson, M.D., Jerald V. Robinson, M.D., William M. Luxford, M.D., and Pat Wade, M.D. (neurosurgeon).

ISSN:0192-9763    

出版商:OVID    

年代:1983

数据来源: OVID

ISSN:0192-9763    

出版商:OVID    

年代:1983

数据来源: OVID