A slightly elevated WBC can be a sign of an infection. Lumps around the neck could be knotted muscles from tension or too much computer usage. Swollen lymph glands are usually almond shaped to the touch as well.
About your ENT exam - they should use mirrors, palpation and possibly a nasolarygniscope down your nose for a video look see. None of these are any big deal. They will numb you for the scope. Even if they do a biopsy - it's relatively painless. We always say "it aint cancer until the pathology report says it is".

I hope that you have made a decision to never use tobacco products again.