O.482 European Sentinel Node Trial – positive node study

Oral Presentations cell carcinoma with CT proven N0 necks. Patients with identifiable Sentinel Nodes on lymphoscintigraphy were entered in the study and nodes retrieved intraoperatively by hand held gamma probe and blue dye. A positive SN led to neck dissection within 3 weeks of biopsy. Results: In the period 2006−7 176 cases were recruited, (62% M, 38% F, 64% T1, 31% T2, 5% T3). Positive SNB occurred in 38 patients (22%), 9 of which had further positive nodes on neck dissection. False negative occurred in 7 cases, subsequently treated with neck dissection and adjuvant RT (2 with concomitant chemotherapy). Tumour recurrence after positive SNB and neck dissection occurred in 3 patients and a further 3 cases (all negative SNB) had a new primary. Complications were low (