Fig. 3From: The role of transoral robotic surgery, transoral laser microsurgery, and lingual tonsillectomy in the identification of head and neck squamous cell carcinoma of unknown primary origin: a systematic reviewIdentification of unknown primary using lingual tonsillectomy in the presence (+) or absence (-) of other findings. Abbreviations: PE, physical examination; DI, diagnostic imaging; CT, computed tomography; MRI, magnetic resonance imaging; PET, position emitted tomography; EUA, examination under anesthesia with directed biopsyBack to article page