Results of PET/CT and of Routine SN Procedure
| Patient | Tumor | Level of foci identified on PET/CT | Level of foci identified on planar lymphoscintigraphy and SPECT/CT | SN biopsy | Blue | Pathology |
| 1 | T1 floor of mouth (paramedian R) | 1× IB R (SN) | Not visible | Not detected | ||
| 1× IB R (SN) | Not visible | Not detected | − | − | ||
| 2× II R (SN) | 2× II R (SN) | 2× II R | − | − | ||
| 1× III R (SN) | 1× III R (SN) | 1× III R | ||||
| 2 | T1 lateral tongue (R) | 2× II R (SN) | 2× II R (SN) | 2× II R | + (1×) | + (1×) |
| 1× II R (second echelon) | 1× II R (second echelon) | 1× III R | − | − | ||
| 1× III R (second echelon) | 1× III R (SN) | |||||
| 3 | T1 lateral tongue (L) | 1× IB L (SN) | 1× IB L (SN) | 1x IB L | + | − |
| 1× II L (SN) | 1× II L (SN) | 1x II L | + | − | ||
| 1× II L (second echelon) | 1× II L (second echelon) | |||||
| 1× III L (second echelon) | 1× III L (second echelon) | |||||
| 4 | T2 floor of mouth (midline) | 1× IB L (SN) | 1× IB L (SN) | Not detected | ||
| 2× II L (SN) | 2× II L (SN) | 2x II L | − | − | ||
| 1× III L (SN) | 1× III L (SN) | 1x III L | − | + | ||
| 1× IV L (second echelon) | 1× IV L (second echelon) | 1x IB R | − | − | ||
| 1× IB R (SN) | 1× IB R (SN) | |||||
| 1× II R (second echelon) | 1× II R (second echelon) | |||||
| 1× III R (second echelon) | 1× III R (second echelon) | |||||
| 1× IV R (second echelon) | 1× IV R (second echelon) | |||||
| 5 | T1 floor of mouth (paramedian R) | 1× lingual node L (SN) | Not visible | Not detected | ||
| 1× lingual node R (SN) | Not visible | Not detected | + | − | ||
| 1× IB R (SN) | Not visible | Not detected | − | − | ||
| 1× II L (SN) | 1× II L (SN) | 1x IB L | ||||
| 1× III L (SN) | 1× III L (SN) | 1x III L | ||||
| Total | 27 (19 SNs) | 22 (15 SNs) | 14/15 (93%) | 4/14 (29%) |