Vestibular schwannoma

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Vestibular schwannoma

ORPHA:252175Clinical subtype

Also called Acoustic neurilemoma · Acoustic neurinoma · Acoustic neuroma

What it is

Vestibular schwannoma is a rare tumor of the posterior fossa originating in the Schwann cells of the vestibular transitional zone of the vestibulocochlear nerve that can be benign, small, slow growing and asymptomatic or large, faster growing and aggressive and potentially fatal, presenting with symptoms of hearing and balance impairment, vertigo, ataxia, headache and fifth, sixth or seventh cranial nerve dysfunction and facial numbness.

Key facts

Prevalence
1-9 / 100 000 (annual incidence, Denmark)
Classified as
Clinical subtype

Recorded for the broader condition

Age of onset
Adult, ElderlyBenign schwannoma
Inheritance
Not applicableBenign schwannoma

Orphanet records these for the broader condition rather than for this specific form. They are a starting point, not a figure for this subtype — subtypes often differ, and some are defined by being rarer than the condition they sit under.

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

ICD-10 codes

D33.3filed under a broader ICD-10 category — shared with 1 other rare disease

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Cross-references

GARD 223MEDDRA 10000523MESH D009464MONDO 0001569UMLS C0027859

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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