hello,im about to have my 3rd biopsy on my lower gum since last september,first result fungal infection,no cancer,2nd result granulated tissue,no cancer,now ent wants to biopsy the same area again,can biopsys get it wrong.i have no ear pain or discomfort but in saying that i am numb on that side since jaw removal 18 months ago.my gum is white patchs and doesnt look good,but wipes off and is just red and then white reappears again,any ideas