FIGURE 2.

Differences between neck staging using only the sentinel lymph node biopsy procedure or combined with cortactin expression levels. The differences in selection of neck staging procedures in 33 patients with a pT1cN0 OSCC and a tumor infiltration depth <4 mm with and without using cortactin expression. These 33 patients had neck staging using SLNB, while 82% had no neck lymph node involvement (negative true N‐classification). If these patients were selected for a watchful waiting procedure using cortactin expression, 8% out of 26 patients with a low cortactin expression would have been false negatives (positive true N‐classification) and 43% out of 7 patients with a high cortactin expression and without lymph node involvement (negative true N‐classification) would have had neck staging using SLNB procedure