Patients who are pending direct laryngoscopy after presenting to the Department of Otolaryngology-Head and Neck Surgery at UCSF with UADT lesions will be asked to participate in the study provided all eligibility criteria are met. Under current standard-of-care for diagnostic evaluation and staging of UADT lesions, patients will undergo imaging studies including CT and/or MRI of the neck with contrast prior to direct laryngoscopy. Study participants will undergo both the TNFE NBI and DRE procedures.