Elective Neck Dissection for Primary Oral Cavity Squamous Cell Carcinoma Involving the Tongue Should Include Sublevel IIb

Sublevel IIb is likely to be an important region to incorporate in elective neck dissections for primary OCSCC involving the tongue. More studies are needed, with greater numbers, to clarify the risk of metastasis to sublevel IIb from oral cavity subsites in primary OCSCC with clinically node-negative necks.