Sorry Melike, I didn't see your last post. The white matter would not be demyelination and it's probably a harmless mass. What type of tinnitus do you have, because a tapping type could relate to ear muscle spasms and then to the facial nerve? Pulse types of tinnitus would be excluded from facial nerve interaction. Do you get headaches and have you ever been tested for Lyme which is an easy fix in Turkey.