Diagnosis Criteria: Neurofibromatosis Type 2
There are two different criteria for Neurofibromatosis Type 2 (NF2), the Manchester Criteria and the Baser Pediatric Criteria.
Manchester Criteria (1997 – Now)
The NF2 Manchester Criteria is what an individual with NF2 may face but is difficult to use for pediatric diagnosis. Many with NF2 do not meet the Manchester Criteria for diagnosis until late teens.
The Manchester Criteria required one of the following three conditions to apply for diagnosis of NF2:
• Bilateral Vestibular Schwannoma/Acoustic Neuroma
• 1 or more 1st degree relative with NF2 + unilateral Vestibular Schwannoma at <30 years
• 2 of the following: Meningioma, Glioma, Schwannoma, Juvenile Posterior Lenticular Opacities
Baser Pediatric Criteria (2016-Now)
The NF2 Baser Pediatric Criteria not only helps with an early-life pediatric diagnosis but can be used for diagnosis of a spontaneous-mosaic NF2 to determine if their child has hereditary NF2.
One of the following
- Primary Finding: Bilateral Vestibular Schwannoma
Added Features needed for Diagnosis: none
- Primary Finding: First-degree relative with NF2
Unilateral Vestibular Schwannoma, or
- Added Features needed for Diagnosis: Any two (2) other NF2-Associated lesions:
Meningioma, Schwannoma, Glioma, or Cataracts
- Primary Finding: Unilateral Vestibular Schwannoma
Added Features needed for Diagnosis: Any two (2) other NF2-Associated lesions:
Meningioma, Schwannoma, Glioma, Neurofibroma, or Cataract
- Primary Finding: Multiple Meningiomas
Added Features needed for Diagnosis: Unilateral Vestibular Schwannoma, or
Any two (2) other NF2-Associated lesions: Schwannoma, Glioma, Neurofibroma, or Cataracts
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Café spots are part of the criteria for the diagnosis of Neurofibromatosis Type 1 (NF1), they are not a part of the NF2 criteria since it is possible but not guaranteed.
https://www.nf2is.org/diagnosis.php