Background:
The supraomohyoid neck dissection (sohnd) is often performed in patients with cancer of the oral cavity, where there is no clinical or radiologic evidence of regional metastases. when on pathologic examination positive neck nodes are found, however, some consider it a curative operation, whereas others regard it as a staging procedure only.
Methods:
We retrospectively reviewed 43 patients with cancer of the oral cavity who had a sohnd during the period from 1991 to 1994. all patients were staged as having n0 disease and had a total of 48 sohnds (38 unilateral, 5 bilateral). the follow-up period was at least 2 years.
Results:
Seven of 48 n0-staged necks showed occult metastasis (15%). two of these patients received postoperative radiotherapy. one of 7 (14%) patients with pathologic node-positive disease on the sohnd side developed recurrent ipsilateral neck disease during the follow-up period, whereas 4 (10%) recurrences developed in 41 necks that were pathologically staged as n0. survival was 88% for patients with pathologically n0 necks versus 86% for patients with pathologically n+; disease.
Conclusion:
Supraomohyoid neck dissection is an effective staging procedure; however, in this group of patients, neck recurrence and patient survival after sohnd appear not to be related to pathology n stage. also, sohnd with or without adjuvant radiotherapy appears to control the neck in the majority of patients, attesting to therapeutic efficacy. a prospective study is needed, however, to see if a "wait and see" policy does not achieve similar long-term outcome.