segmental neurofibromatosis ( nf ) is characterized by the strictly unilateral occurrence of features that are typical of the more ordinary forms of nf ( i.e. , nf-1 , nf-2 ) , including schwannomas , cutaneous or plexiform neurofibromas , and/or cafe au lait spots .
C0027831
nf-1
C0221263
cafe au lait spots