Diagnosis of acoustic neurinoma

Harner, S G; Laws, E R

doi:10.1097/00006123-198110000-00004

Cited by 4 publications

(4 citation statements)

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“…Clinical features among the patients with vestibular schwannoma in the present study are similar to those previously reported. 27 "- 10 The high percentage of patients with asymmetrical sensorineural hearing loss emphasizes the importance of excluding the diagnosis of vestibular schwannoma in such a patient population. Sudden hearing impairment likely reflects vascular occlusion.…”

Section: Clinical Featuresmentioning

confidence: 99%

Epidemiology and Clinical Features of Vestibular Schwannoma in Manitoba, Canada

Frohlich

Sutherland

1993

Can. j. neurol. sci.

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Section: Clinical Featuresmentioning

confidence: 99%

Epidemiology and Clinical Features of Vestibular Schwannoma in Manitoba, Canada

Frohlich

Sutherland

1993

Can. j. neurol. sci.

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“…An additional nine non-tumor patients had a pure-tone average (PTA) of more than 80 decibels (dB). These patients were also removed from the study since retrocochlear testing is thought to be unreliable at this level of severe hearing IOSS.I, [7][8][9]19 The final study group, then, was composed of 41 patients with CPA lesions and 82 non-tumor patients. Six of these CPA lesions were not acoustic neuromas, but were given other diagnoses as follow: cholesterol granuloma (2), meningioma (I), cholesteatoma (I), adenoma (1), and metastatic carcinoma (I).…”

Section: Methodsmentioning

confidence: 99%

“…1 Multiple tests have been proposed to differentiate cochlear from retrocochlear hearing loss. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Previously useful tests, such as the short-increment sensitivity index and Bekesy audiometry, have been largely abandoned in favor of less subjective and more sensitive examinations. 2.4.5.9.12.…”

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confidence: 99%

The Audiologic Evaluation of Cerebellopontine Angle Tumor Suspects: A Review of Tumor and Non‐Tumor Suspects

Barrs

Olsson

1987

Otolaryngol.--head neck surg.

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In an initial study from January 1981 through December 1983, audiologic data were gathered on 41 patients with proven cerebellopontine angle (CPA) tumors and 82 tumor suspects who revealed no tumor on computed tomography with air cisternography of the internal auditory canal. The acoustic reflex threshold and decay, performance intensity function for phonetically balanced (PB) words, and several auditory brainstem response (ABR) variables were examined. Sensitivity, specificity, and diagnostic efficiency were calculated for each test. The ABR was better than the other tests. The interaural wave V latency difference (IT5) had a sensitivity of 100%, specificity of 80%, and diagnostic efficiency of 87%. In a subsequent study, from January 1984 to June 1985,52 patients with abnormal IT5 values were examined to determine the predictive value of a positive IT5 in detection of a CPA tumor. Nineteen of these patients had CPA tumors, for a detection rate of 36%. The high diagnostic efficiency of the ABR, coupled with the prevalence of a CPA tumor in a tumor suspect population, will translate into a yield of approximately one tumor for every three abnormal IT5 tests.

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“…Dennoch sollten Seitendifferenzen von 1 Olm im Zusammenhang mit einer Verdünnung der Wände, einer Arrosion der Spitze oder einem Unterschied in der Konfiguration des inneren Gehörgangs als verdächtig angesehen werden (38,81). Die Felsenbeintomographie zeigt sich in den größeren Serien mit 69 bis 84 % pathologischer Befunde der einfachen Stenversdiagnostik überlegen (32,80,132,155,193,215). Die Rate der falsch-positiven Befunde steigt jedoch von 3,5 auf 10 % an (Osborn 1975).…”

Section: Radiologische Diagnostikunclassified

Klinik und Diagnostik der Akustikusneurinome

Tackmann¹,

Bockenheimer²

1985

Fortschr Neurol Psychiatr

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The application of microsurgical techniques for the removal of acoustic neuromas has evidenced greatly improved postoperative results. Therefore the early detection of an acoustic neuroma is a special need for every neurologist. The development of new electrophysiological and radiological procedures now allows a far better approach in the diagnosis of acoustic neuromas. Brain stem auditory evoked potentials as well as acoustic reflex testing have shown to be rather sensitive tools in the diagnosis of retrocochlear pathology. Other electrophysiological procedures have been widely replaced by these techniques. Gasmeatocisternography in combination with cranial computed tomography is the method of choice in the detection of small acoustic neuromas. The current status in the application of different techniques for the diagnosis of acoustic neuromas is reviewed.

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Diagnosis of acoustic neurinoma

Cited by 4 publications

References 0 publications

Epidemiology and Clinical Features of Vestibular Schwannoma in Manitoba, Canada

Epidemiology and Clinical Features of Vestibular Schwannoma in Manitoba, Canada

The Audiologic Evaluation of Cerebellopontine Angle Tumor Suspects: A Review of Tumor and Non‐Tumor Suspects

Klinik und Diagnostik der Akustikusneurinome

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