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Axial-fused fluorine-18 fludeoxyglucose (18F-FDG) positron emission tomography (PET)/CT images in a 44-year-old male who presented with left cervical lymphadenopathy with biopsy showing squamous carcinoma. Initial investigations showed no definite primary within the upper aerodigestive tract, but PET/CT showed a focus of intense FDG uptake in the left vallecula, and subsequent biopsy of this area confirmed primary carcinoma.
