Chiwen ~
If your AN resides in your right ear, as it were, it's normal for you to lose some hearing in that ear, although, with AN patients, how much hearing you lose will vary from person to person - and some AN patients lose little or no hearing in the affected ear. It's entirely situational. However, your unaffected left ear should retain it's normal level of hearing because the AN within your right ear does not affect the opposite ear, unless you developed a (second) tumor in that ear (your left), which is rare. The question remains: how do you know you have '100%' hearing in your left ear? If your hearing ability in your left ear seems to be fluctuating, you may need some further tests to ascertain if this change is simply apparent - or real. At this point, I see no need to panic because your other symptoms seem to be relatively common for AN patients; the tongue/facial numbness - and the hearing loss. Again, if you're convinced that your ability to hear in your left ear - the one without the AN - is changing, even for the better, you should consider having it checked out to learn if there is a problem or simply a mis-perception on your part regarding your hearing ability in your 'good' ear. I hope this can be resolved soon.
Jim
