In 30 patients with CNO OSCC who had SLNs, 52 SLNS and 1290 NSLNs were examined by multiple section and IHC, 2 additional SLNs were indentified for tumor-positive. Multiple section and IHC stains on SLNs could reduce the false-negative rate of SLN.

• 30例CNO口腔鳞癌常规病理检查阴性的52枚SLN和1290枚SLN检测又发现2枚常规病理阴性的SLN存在微转移灶；使30例CNO口腔鳞癌的颈部淋巴转移率又提高6.；67%25(2/30)。