The problem of unilateral and bilateral neck dissection

Area of Science:

• Oncology
• Surgical Oncology
• Head and Neck Cancer

Background:

• Neck dissections are crucial surgical procedures for head and neck cancers.
• Understanding the impact of unilateral versus bilateral dissections on patient outcomes is vital.
• Immunobiological factors may influence the efficacy of cancer treatment strategies.

Purpose of the Study:

• To analyze the survival outcomes of unilateral and bilateral neck resections for various head and neck tumors.
• To evaluate the indications for prophylactic versus therapeutic neck dissections.
• To correlate surgical approach with immunologic considerations in head and neck cancer management.

Main Methods:

• Retrospective analysis of 270 neck dissections (unilateral and bilateral) performed between 1960-1970.
• Separate analysis of radical resections for laryngeal, hypopharyngeal, and skin carcinomas.
• Consideration of immunologic factors in treatment strategy.

Main Results:

• Survival rates were 37% for 209 unilateral resections and 4.9% for 61 bilateral resections.
• Analysis revealed specific patterns for laryngeal, hypopharyngeal, and skin cancers.
• Histologically positive lymph nodes were frequently observed in T3 laryngeal and hypopharyngeal carcinomas.

Conclusions:

• Prophylactic block resection is discouraged due to potential negative impact on immunobiological anti-tumor responses.
• Neck evacuation (dissection) is indicated for T3 laryngeal and hypopharyngeal carcinomas due to high incidence of lymph node metastasis.
• Surgical strategy should consider tumor stage and potential immune system involvement.