lymph nodes, tonsillectomy, multiple biopsies, HPV positive, NavDx, neck dissection, probability of primary emergence, lingual tonsillectomy, ipsilateral node, right node, toxicity levels, avoid the larynx, base of tongue, skin cancer, balding, postauricular lymph node, biopsy, squamous cell carcinoma, rapid onset, CT scan, PET scan, MRI scan, perineural invasion, carotid, bolus printing, bolus shell, p16 unknown primary, level 1B lymph node, HPV negative,