Mother had unilateral acoustic neuroma at 34, i have 4 small cafe au lait spots and my son has 2 small ones. mother doesn't have any. nf1?

?Von Recklinghausen': Probably, some hereditary component here, and sounds like incomplete penetrance. This, however, can be blood tested and confirmed or disconfirmed, so not a bad idea to get a clear fix on risk factors. However, possibility of future acoustic neuromas in other family members is low statistically.

Variable: If you have more than six cafe au lait spots, strong indication of nf1.In nf1, cafe au lait spots are usually appear during the first years of life. Nf1 manifests by puberty. Inheritance is autosomal dominant, 50% of children from person with nf will have it.Nf2 has acoustic neuromas usually bilateral. 90% occur unilateral as isolated event. Nf1 & 2 on different chromosomes 17 and 22.