A hypoglossal schwannoma is similar to an AN, just in a different location (on the hypoglossal nerve instead of on the vestibulocochlear nerve, as is the case with an AN). It's also 100 times more rare than an AN, affecting 1 in every 10 million people. I have had no symptoms from my hypoglossal schwannoma to date. Like the facial nerve, the hypoglossal nerve is a motor nerve which is very resilient. In my case, the tumor has not grown over the past 4 years (since it was discovered). So unless it starts to grow again or I start getting symptoms (for example, having trouble moving my tongue from side to side), the best course of action is W&W. The only bummer (besides having the damn thing in the first place) is I have to get an MRI series taken every year to make sure it's not growing. Otherwise, it doesn't affect me. I don't think about it that much.
Best wishes,
TW