Acoustic Neuroma: Test and Diagnosis
Laboratory diagnosis is usually not required.
Acoustic Neuroma
Acoustic Neuroma: Medical History
Medical history (history of illness) represents an important component in the diagnosis of acoustic neuroma. Family history What is the general health of your family members? Are there any diseases in your family that are common? Are there any hereditary diseases in your family? Social history What is your profession? Current medical history/systemic history (somatic … Acoustic Neuroma: Medical History
Acoustic Neuroma: Or something else? Differential Diagnosis
Neoplasms – Tumor Diseases (C00-D48). Brain tumors, unspecified Cerebellopontine angle meningioma – benign neoplasm arising from the meninges.
Acoustic Neuroma: Symptoms, Complaints, Signs
The following symptoms and complaints may indicate acoustic neuroma: Leading symptoms Unilateral decrease in hearing (hearing loss), especially high-frequency hearing loss Hearing loss (sudden onset, unilateral, almost complete hearing loss). Balance disorders, possibly also gait insecurity (with Verlaufsbeoabchtung: disturbed sense of balance is considered a risk factor for tumor growth). Sensorineural hearing loss Vertigo (dizziness): … Acoustic Neuroma: Symptoms, Complaints, Signs
Acoustic Neuroma: Causes
Pathogenesis (disease development) Acoustic neuroma (AKN) is a benign (benign) tumor arising from the Schwanńs cells of the vestibular portion of the VIIIth cranial nerve. Cranial nerve, the auditory and vestibular nerves (vestibulocochlear nerve, acustic nerve; octaval nerve), and is located in the internal auditory canal, or at greater extension in the cerebellopontine angle. Etiology … Acoustic Neuroma: Causes
Acoustic Neuroma: Therapy
Conventional nonsurgical therapy methods Stereotactic radiosurgery – for pinpoint fractionated irradiation of the tumor One study determined malignancy rates (“malignancy rate”) after radiosurgical treatment of acoustic neuromas (vestibular schwannomas) ranging from 0.04% after 15 to 0.3% after 12.5 years. The incidence (frequency of new cases) of malignant transformation (transition from normal growth-controlled cells to uncontrolled … Acoustic Neuroma: Therapy
Acoustic Neuroma: Complications
The following are the most important diseases or complications that may be contributed to by acoustic neuroma: Psyche – Nervous System (F00-F99; G00-G99). Central nervous system compression symptoms – paralysis, hearing loss, etc.
Acoustic Neuroma: Classification
Tumor classification according to Wigand Stage Tumor size A Limited to the internal auditory canal and tumor size (mean diameter) of 1-8 mm B Extension to the cerebellopontine angle and tumor size of 9-25 mm. C Contact with the brainstem and tumor size > 25 mm. Tumor classes according to Samii Tumor class Description T1 … Acoustic Neuroma: Classification
Acoustic Neuroma: Examination
A comprehensive clinical examination is the basis for selecting further diagnostic steps: General physical examination – including blood pressure, pulse, body weight, height, etc. ENT medical examination – differential diagnosis of hearing loss. Neurological examination – including reflex testing, verification of sensitivity/motor function.
Acoustic Neuroma: Diagnostic Tests
Obligatory medical device diagnostics. Tone audiometry – testing of hearing with measurement of loudness levels of different pitched tones that just evoke auditory sensation. Brainstem audiometry (ABR) – diagnostic procedure in neurology and otolaryngology used for electrophysiological assessment of objective hearing ability. Computed tomography/magnetic resonance imaging of the skull (cranial CT or.cCT/cranial MRI or cMRI).
Acoustic Neuroma: Surgical Therapy
Note: Complete tumor removal is no longer a priority in every case. Observe (so-called “watchful waiting”) as long as hearing is stable and the tumor is not growing! Indication Small tumors (max diameter of < 10-15 mm or volume < 1.7 cm 3): Observational waiting (so-called “watchful waiting”), esp. if these are purely intracanalicular and … Acoustic Neuroma: Surgical Therapy
