Neck dissection with or without postoperative radiotherapy in supraglottic carcinomas

Area of Science:

• Oncology
• Head and Neck Surgery
• Radiation Oncology

Background:

• Supraglottic carcinoma is a significant head and neck cancer.
• Management often involves surgery and may include postoperative radiotherapy.
• The role of radiotherapy in preventing neck recurrence and its impact on distant metastasis requires clarification.

Purpose of the Study:

• To evaluate the efficacy of postoperative radiotherapy in previously untreated patients with primary supraglottic carcinoma.
• To assess the impact of radiotherapy on ipsilateral and contralateral neck recurrence.
• To determine the effect of radiotherapy on distant metastasis rates.

Main Methods:

• Retrospective review of 302 patients with primary supraglottic carcinoma.
• Patients underwent functional neck dissection or classic radical neck dissection.
• Analysis of recurrence rates (ipsilateral, contralateral) and distant metastasis based on radiotherapy status and nodal involvement (N0, N1, N2, N3).

Main Results:

• Postoperative radiotherapy significantly reduced contralateral neck recurrence in the N0 group (8% with radiation vs. 21% without).
• Ipsilateral recurrence rates were similar in radiated and non-radiated N0 and N1 groups.
• Patients receiving postoperative radiotherapy had a higher rate of distant metastasis (21% vs. 8%).

Conclusions:

• Postoperative radiotherapy is effective in reducing contralateral neck recurrence for supraglottic carcinoma patients with N0 disease.
• Radiotherapy does not significantly impact ipsilateral recurrence rates.
• The increased risk of distant metastasis with postoperative radiotherapy warrants careful consideration in treatment planning.