<p class="abstract"><strong>Background:</strong> Oral cancer is the sixth most common cancer in the world and is largely preventable. The objective of the study is to find out the frequency of metastasis to posterior triangle lymph nodes and lower deep jugular (supraclavicular) lymph nodes in patients with squamous cell carcinoma of oral cavity having clinically N<sub>1 </sub>neck.</p><p class="abstract"><strong>Methods:</strong> A hospital based prospective study.<strong> </strong>This prospective study was conducted in R. L. Jalappa Hospital and Research Centre and SDU Medical College Kolar, Karnataka. 30 patients having oral squamous cell carcinoma with clinically N<sub>1 </sub>neck (single ipsilateral lymph node less than 3cms in diameter) undergoing modified radical neck dissection in R. L. Jalappa Hospital and Research Centre. </p><p class="abstract"><strong>Results:</strong> In our study, 4 were male (13%) and 26 were females (87%). The age of the patients ranged from 41-70 years with a mean age of 53 years.<strong> </strong>Majority of primary tumours were buccal mucosa tumours (24). We had 6 anterior 2/3<sup>rd</sup> tongue tumours. The primary tumour staging included 17 T<sub>2 </sub>lesions (57%), 3 T<sub>3 </sub>lesions (10%), 10 T<sub>4 </sub>lesions (33%) in patients with buccal mucosa carcinoma, fourteen patients had T<sub>2 </sub>disease, 9 patients had T<sub>4</sub> and one patient had T<sub>3</sub> disease.</p><p class="abstract"><strong>Conclusions:</strong> Most common nodal involvement in buccal mucosa carcinoma was level Ib (submandibular lymph node). The incidence of level IV (supraclavicular) and level V (posterior triangle) lymph node metastasis is low in buccal mucosa carcinoma patients with clinically N<sub>1</sub> neck.</p>
Evaluation of Clinical and Histomorphological Parameters as Potential Predictors of Occult Metastases in Sentinel Lymph Nodes of Early Squamous Cell Carcinoma of the Oral Cavity