Definite neurofibromatosis 2 - one of the following:
(1) bilateral vestibular schwannomas
(2) both of the following:
(2a) first-degree relative with NF2
(2b) unilateral vestibular schwannoma before 30 years of age
(3) both of the following:
(3a) first-degree relative with NF2
(3b) >= 2 of the following: meningioma, schwannoma, glioma, juvenile lens opacity (posterior subscapsular cataract or cortical cataract)
Probable/presumptive neurofibromatosis 2 - one of the following:
(1) both of the following:
(1a) unilateral vestibular schwannoma before 30 years of age
(1b) >= 2 of the following: meningioma, schwannoma, glioma, juvenile lens opacity (posterior subscapsular cataract or cortical cataract)
(2) both of the following:
(2a) unilateral vestibular schwannoma before 30 years of age
(2b) >= 2 meningiomas
(3) both of the following:
(3a) >= 2 meningiomas
(3b) >= 1 of the following: schwannoma, glioma, juvenile lens opacity (posterior subscapsular cataract or cortical cataract)
