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Poorly Diagnostic Findings

Findings With Unspecified Accuracy

Acoustic neuroma: Likelihood Ratios

Introduction: None written.

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Tags: Neoplasm Otolaryngology Tag this Diagnosis.

Prevalence

Population / CalculatorPrevalence Comments / Study / Link
Overall 0.02% This is based on a retrospective analysis of 46,000 MRI done for other reasons, which identified 8 acoustic neuromas.

The prevalence of "incidental" acoustic neuroma.

Lin D; Hegarty JL; Fischbein NJ; Jackler RK

Arch Otolaryngol Head Neck Surg 2005 Mar;131(3):241-4.

Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, USA.

PMID 15781765

Neurofibromatosis Type 2 100% Eventually, close to 100% of NF Type 2 patients will develop bilateral acoustic neuromas.

Neurologist. 2006 Mar;12(2):86-93.

Neurofibromatosis types 1 and 2.

Yohay K.

Division of Child Neurology and Pediatrics, Johns Hopkins University, Baltimore,

Maryland 21287, USA. kyohay@jhmi.edu

PMID: 16534445

More, Edit...

The likelihood ratios of findings for Acoustic neuroma are listed below. See the left navigation bar to change the display.

Pre-Test Probability (Prevalence): %. Post-Test Probability (Predictive Value): %. Switch to display mode.
**Note that calculating probabilities from more than one finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)
Poorly Diagnostic Findings
FindingResult +LR-LR
[ + ] Hearing loss, asymmetric Sensitivity = 95%
[ + ] Auditory Brainstem Response test (ABR) Sensitivity = 85%
Findings With Unspecified Accuracy
FindingResult +LR-LR
[ + ] MRI with Gadolinium Contrast No accuracy specified.
[ + ] Vertigo No accuracy specified.
[ + ] Cranial Nerve V abnormalities No accuracy specified.
[ + ] Cranial Nerve VII abnormalities No accuracy specified.
[ + ] Headache No accuracy specified.