The Impact of ¹⁸F-FDG PET CT Prior to Chemoradiotherapy for Stage III/IV Head and Neck Squamous Cell Carcinoma

Figure 1

Altered TNM staging and lymph node level identification with FDG PET-CT. T4 squamous cell carcinoma of left tonsil. Diagnostic CT identified T4 N2b disease. FDG PET-CT identified a subcentimetre (SUV_max = 3.5) contralateral lymph node, altering staging to T4 N2c. (a) Diagnostic contrast-enhanced CT. (b) Coregistered FDG PET-CT. (c) FDG PET. White arrow = right level II lymph node.

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