Contemporary management of the clinically N0 neck in oral squamous cell carcinoma

Area of Science:

• Oncology
• Head and Neck Surgery
• Diagnostic Imaging

Background:

• The N0 neck in oral squamous cell carcinoma (OSCC) presents a management dilemma due to occult metastases in 20-30% of early-stage cases.
• Advanced imaging has improved detection, but optimal management strategies for the clinically negative neck remain under investigation.

Purpose of the Study:

• To review current evidence on the optimal management strategies for the N0 neck in oral cancer patients.
• To provide evidence-based recommendations for clinical decision-making in managing oral cancer with a clinically negative neck.

Main Methods:

• Review of diagnostic modalities: clinical examination, conventional imaging (ultrasound, CT, MRI), functional imaging (PET), and sentinel lymph node biopsy (SLNB).
• Evaluation of management approaches: elective neck dissection, watchful waiting, and SLNB, based on randomized controlled trials and meta-analyses.
• Analysis of patient and tumor factors influencing decision-making (e.g., tumor thickness, location, differentiation, invasion pattern).

Main Results:

• Patient and tumor characteristics significantly influence the choice of management for the N0 neck.
• Specific considerations for different oral subsites and clinical scenarios are detailed.
• Evidence from RCTs and meta-analyses guides the evaluation of treatment efficacy.

Conclusions:

• Emerging technologies like molecular biomarkers and liquid biopsy offer future directions for personalized N0 neck management.
• The review offers evidence-based guidance for clinicians managing oral cancer patients with a clinically negative neck.
• Optimal management requires careful consideration of diagnostic accuracy and patient-specific factors.