Table 1.
TNM Staging according to contrast-enhanced CT only, whole-body PET only, Gd-enhanced T1-weighted MRI, regional PET only, regional PET/Gd-MRI and whole-body PET/Dixon VIBE MRI + regional PET/Gd-MRI
| Patient | Primary tumor | Pathology | TNM stage | |||||
|---|---|---|---|---|---|---|---|---|
| CE-CT TN | WB PET NM | Gd-MRI TN | R-PET N | R-PET/ Gd-MRI TN | WB PET/Dixon VIBE MRI + R-PET/Gd-MRI TNM | |||
| 1 | Parotid | Pleomorphic adenoma | - | - | - | - | - | - |
| 2 | Parotid | Warthin tumor | - | - | - | - | - | - |
| 3 | Tongue | SCC | - | N2bM0 | T4aN2b | N2b | T4aN2b | T4aN2bM0 |
| 4 | Tonsil | SCC, MD | - | N1M0 | TxN2b | N2b | T1N2b | T1N2bM0 |
| 5 | Tonsil | SCC | TxN2c | N2cM0 | T2N2c | N2c | T2N2c | T2N2cM0 |
| 6 | Tonsil | SCC, WD | T3/T4N0 | N2cM0 | T4bN2b | N2c | T4aN2c | T4aN2cM0 |
| 7 | Tonsil | SCC, MD | T2N2a | N2bM0 | T2N2b | N2b | T2N2b | T2N2bM0 |
| 8 | Nasopharynx | Non-keratinizing type, PD | TxN1 | N1M0 | T1N1 | N1 | T1N1 | T1N1M0 |
| 9 | Hypopharynx | SCC | T2N1 | N2bM0 | T3N2b | N2b | T3N2b | T3N2bM0 |
| 10 | Hypopharynx | SCC, MD | T4bN0 | N2bM0 | T2N0M1 or T3N0 | N2b | T4bN2b | T4bN2bM0 |
CE-CT contrast enhanced CT, WB PET whole-body PET, Gd-MRI Gd-enhanced T1-weighted MRI, R-PET regional PET, R-PET/Gd-MRI the integration of regional PET with Gd-enhanced T1-weighted MRI; SCC squamous cell carcinoma, WD well differentiated, MD moderately differentiated, PD poorly differentiated