IMPORTANCE: Optimum management of the clinically negative neck in the presence of primary site recurrence of laryngeal or hypopharyngeal cancer remains unclear. OBJECTIVE: To examine the incidence of occult cervical nodal metastatic disease in patients undergoing salvage laryngectomy with necks clinically staged as N0 at the time of recurrence and to define the role of elective neck dissection in this population with regard to risk of complications and oncologic outcomes. DESIGN: Retrospective study of patients treated from 1996 through 2011. SETTING: Academic teaching hospital. PARTICIPANTS: All patients undergoing salvage total laryngectomy for squamous cell carcinoma of larynx or hypopharynx after failed initial radiotherapy or chemoradiotherapy with radiographically N0 neck at time of recurrence. MAIN OUTCOMES AND MEASURES: Primary outcome measure was incidence of cervical nodal metastases detected by means of pathological examination of elective neck dissection specimens. Secondary outcome measures were incidence of major postoperative complications and regional cancer control. RESULTS: Forty-five patients were included. Thirty-eight underwent elective unilateral (20) or bilateral (18) ND at the time of laryngectomy. Three patients (8%) had occult metastases (3 of 56 dissected heminecks [5%]). The incidence of major wound complications was significantly greater in patients undergoing bilateral ND (12 of 18 [67%]) than in patients undergoing unilateral or no ND (8 of 27 [30%]) (P = .03). There was no significant difference in regional control according to whether bilateral, unilateral, or no ND was performed. CONCLUSIONS AND RELEVANCE: The incidence of occult metastatic disease in N0 necks in patients undergoing salvage surgery after radiotherapy is low. Neck dissection in this population does not seem to have a significant impact on regional cancer control. The need for elective ND, particularly bilateral ND, should be balanced against possible increased risk of morbidity in this group.
IMPORTANCE: Optimum management of the clinically negative neck in the presence of primary site recurrence of laryngeal or hypopharyngeal cancer remains unclear. OBJECTIVE: To examine the incidence of occult cervical nodal metastatic disease in patients undergoing salvage laryngectomy with necks clinically staged as N0 at the time of recurrence and to define the role of elective neck dissection in this population with regard to risk of complications and oncologic outcomes. DESIGN: Retrospective study of patients treated from 1996 through 2011. SETTING: Academic teaching hospital. PARTICIPANTS: All patients undergoing salvage total laryngectomy for squamous cell carcinoma of larynx or hypopharynx after failed initial radiotherapy or chemoradiotherapy with radiographically N0 neck at time of recurrence. MAIN OUTCOMES AND MEASURES: Primary outcome measure was incidence of cervical nodal metastases detected by means of pathological examination of elective neck dissection specimens. Secondary outcome measures were incidence of major postoperative complications and regional cancer control. RESULTS: Forty-five patients were included. Thirty-eight underwent elective unilateral (20) or bilateral (18) ND at the time of laryngectomy. Three patients (8%) had occult metastases (3 of 56 dissected heminecks [5%]). The incidence of major wound complications was significantly greater in patients undergoing bilateral ND (12 of 18 [67%]) than in patients undergoing unilateral or no ND (8 of 27 [30%]) (P = .03). There was no significant difference in regional control according to whether bilateral, unilateral, or no ND was performed. CONCLUSIONS AND RELEVANCE: The incidence of occult metastatic disease in N0 necks in patients undergoing salvage surgery after radiotherapy is low. Neck dissection in this population does not seem to have a significant impact on regional cancer control. The need for elective ND, particularly bilateral ND, should be balanced against possible increased risk of morbidity in this group.
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