Elective neck dissection versus observation in primary parotid carcinoma

Area of Science:

• Otorhinolaryngology-Head and Neck Surgery
• Surgical Oncology
• Head and Neck Cancer Research

Background:

• Primary carcinoma of the parotid gland can present with a clinically negative neck.
• The presence of occult neck metastases in such cases impacts prognosis.
• Evaluating the role of elective neck dissection is crucial for optimizing patient management.

Purpose of the Study:

• To assess the efficacy of elective neck dissection in patients with parotid gland carcinoma and a clinically negative neck.
• To compare regional recurrence rates and patient outcomes between groups with and without elective neck dissection.

Main Methods:

• Retrospective analysis of 83 previously untreated patients with parotid gland carcinoma and clinically negative necks.
• Comparison of outcomes between 41 patients who underwent elective neck dissection and 42 who did not.
• Analysis of the reliability of fine needle aspiration cytology and frozen section for detecting occult metastases.

Main Results:

• Occult metastases were detected in 20% of patients undergoing elective neck dissection.
• The regional recurrence rate was significantly lower in the elective neck dissection group (12%) compared to the observation group (26%).
• Five-year actuarial survival was 80% with elective neck dissection versus 83% without, and disease-free survival was 86% versus 69%, respectively.

Conclusions:

• Routine elective neck dissection is recommended for all patients with primary carcinoma of the parotid gland.
• Elective neck dissection appears to reduce regional recurrence and potentially improve disease-free survival.
• Further prospective studies are needed to definitively establish the efficacy of elective neck dissection in this patient population.