Neurofibromatosis 2
Last Updated: 2021-11-19
Author(s): Anzengruber F., Navarini A.
ICD11: LD2D.11
Central neurofibromatosis, neurofibromatosis type 2, intracranial neurofibromatosis, acoustic neurofibromatosis, NF-2,neurofibromatosis of the central type.
- Prevalence: 1:40,000
- Rarer than NF-1.
- Autosomal dominant inheritance
- High penetrance
- NFII gene (gene locus: 22q12.2)
- Disruption of Merlin (Schwannomin) protein expression
- The tumours of NF-2 are mostly schwannomas
- Often patients suffer from vertigo
- Mostly: in the area of the VIII. Cranial nerve
- Rarely: in peripheral nerves
- Often patients suffer from vertigo
- Neurofibromatomas rarely occur.
- Café-au-lait spots may appear in 1/3 of patients.
- Subcutaneous schwannomas
- Rare neurofibromas
- Juvenile posterior subcapsular lens opacity/juvenile cortical cataract
- Tumours
- Menigiomas
- Spinal gliomas
- Ependymomas of the spinal cord
To establish the diagnosis, at least 1 criterion must be met.
- Detection of bilateral acoustic neuroma by diagnostic imaging, independent of age
- 1st degree relative (parents, siblings, children) with NF-2 &
- Detection of unilateral acousticus schwannomas by diagnostic imaging, < 30 yrs- Detection of unilateral acoustic neuromas by diagnostic imaging & of the following diseases:
- Meningioma
- swannoma
- Glioma
- Neurofibromas
- Juvenile posterior subcapsular lens opacity
- Hearing loss
- Loss of vision
- Brain pressure symptoms
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