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[Acoustic neuromas : Differential diagnoses].

J Mohamad¹, A Simgen

¹Klinik für Diagnostische und Interventionelle Neuroradiologie, Universitätsklinikum des Saarlandes, Kirrberger Straße 1, 66424, Homburg/Saar, Deutschland. josef.mohamad@uks.eu.

|September 30, 2020

Summary

This summary is machine-generated.

Acoustic neuromas, or vestibular schwannomas, are common tumors. Small, asymptomatic tumors require monitoring, while larger, symptomatic ones may need surgery or radiotherapy.

Keywords:

Brain metastasis Epidermoid Infratentorial tumor Meningioma Peripheral nerve sheath tumor

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Area of Science:

Neurology
Neurosurgery
Oncology

Background:

Acoustic neuromas are the most common infratentorial tumors, originating from vestibular Schwann cells.
Clinical presentation includes hearing loss, tinnitus, dizziness, and facial nerve palsy.
Advanced imaging (CT/MRI) improves diagnosis, but differentiation from other tumors can be challenging.

Purpose of the Study:

To outline the diagnostic challenges and management strategies for acoustic neuromas.
To differentiate acoustic neuromas from other potential infratentorial tumors.
To provide guidance on monitoring versus intervention for acoustic neuromas.

Main Methods:

Review of clinical presentations and diagnostic imaging findings.
Comparison of acoustic neuromas with differential diagnoses like meningioma, epidermoid cysts, and metastases.
Discussion of histopathological evaluation for ambiguous cases.

Main Results:

High sensitivity and specificity of CT and MRI in diagnosing acoustic neuromas.
Difficulties in distinguishing smaller lesions and certain differential diagnoses without histopathology.
Identification of key clinical and imaging features for differential diagnosis.

Conclusions:

Asymptomatic, small acoustic neuromas discovered incidentally warrant MRI monitoring.
Symptomatic, larger acoustic neuromas typically require surgical resection.
Radiotherapy is a viable alternative for non-surgical candidates or smaller symptomatic tumors.