Just FYI, my husband's lesion was first seen by his dentist, who referred him to an oral surgeon for the initial biopsy.

Given that this is on your gum, your dentist may make a referral to an oral surgeon (a dentist who has had additional extensive training in mouth surgery), rather than an ENT. An oral surgeon's biopsy is NOT the same as a brush biopsy, which is done by a general dentist.

When the pathology report came back indicating that the whole lesion should be removed, the oral surgeon then made the referral to the ENT who did that surgery.