a biopsy is the only way they can diagnose cancer. they usually insert a needle in the area and take out a sample. dont worry about the biopsy. the PET will come later if the biopsy comes back cancerous. the MD doesnt do biopsies, thus the referral to the ENT.

WOW, those comments from ur friend/mom must have terrified u. relax. u should post under introduce yourself. let us know how the biopsy turns out. until then, just relax. where is the area of concern??? can u give us a little more info?? oh and welcome to the forum!