Treatment outcome of N3 nodal head and neck squamous cell carcinoma.

OBJECTIVE: The aim of this study was to investigate the treatment outcome of N3 nodal disease. Study design A single institution retrospective nonrandomized study was conducted. A total of 53 patients with primary presentation of squamous cell carcinomas from various head and neck sites from 1980 to 1994 were recruited for this study. Eight patients with nasopharyngeal cancers who underwent treatment with palliative intent were excluded from the study. Treatment options were broadly divided into 4 treatment categories; postoperative radiotherapy; preoperative radiotherapy; surgery alone; and chemotherapy pre- or postoperatively with or without radiotherapy.

RESULTS: Mean age of the participants was 63 years (SD = 8.2); 93% were men. Median follow-up period was 12 months (range, 5 to 184 months). Of the 45 N3 patients, 21 patients had a recurrence in the neck after treatment, with 1 in the contralateral neck. The overall rates of control in the neck at 1, 3, and 5 years were 73.1%, 34.6%, and 26.9%, respectively. The 1, 3, and 5-year neck control rates for each main group were 92.3%, 46.1%, and 46.1% with postoperative radiotherapy; 66.7%, 33.3%, and 11.1% with preoperative radiotherapy and 33.3%, 0%, and 0% with surgery alone. Overall survival rates at 1, 3, and 5-years were 52.8%, 25%, and 22.2%. Survival rates in those who received radiotherapy were better than those who only had surgery. The 5-year survival rate was significantly higher for those who had postoperative radiotherapy (38.9%) compared with patients who had preoperative radiotherapy (9.1%) and surgery alone (0%).

CONCLUSION: Our treatment outcomes, particularly those in the group receiving postoperative radiotherapy, were similar to other studies. The prognosis of N3 neck disease was poor but improved with radiotherapy, particularly postoperative radiotherapy. The role of definitive chemotherapy and/or radiotherapy and salvage surgery is difficult to evaluate as the results are inconsistent and the available data are limited. Future studies in particular with quality of life assessment are needed to evaluate the management of N3 head and neck cancer.