Research Article
The Impact of 18F-FDG PET CT Prior to Chemoradiotherapy for Stage III/IV Head and Neck Squamous Cell Carcinoma
Table 3
Summary of TNM alterations following PET-CT.
| Effect of PET-CT on TNM | No. of patients |
| Upstaging | 11 (20%) | N0 to N1 N0 to N2b N0 to N2c N1 to N2c N2a to N2b N2b to N2c M0 to M1 | 1 1 2 1 1 4 1 | Downstaging | 6 (11%) | N1 to N0 N2c to N2a N2c to N2b | 1 1 4 | No impact | 38 (69%) |
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