Role of intraoperative sentinel node imaging in head and neck cancer

Abstract

At the present time, there is a dilemma concerning the best management of the neck in patients presenting with early head and neck squamous cell carcinoma (HNSCC). Occult cervical metastasis is found in up to a quarter of HNSCC patients with radiologically N0 necks, and for this reason, conventional treatment includes elective neck dissection (END) alongside tumour excision. Sentinel node biopsy (SNB) offers an alternative accurate and minimally invasive method of staging the neck, which has been safely applied to oral cancer. SNB is a patient-specific procedure which has an enhanced recovery compared to END but is currently not widely offered to patients. There are exciting developments in the technology supporting SNB, improving the accuracy and ease of the procedure and opening up the technique to new tumour types. We describe our experiences in using a novel intraoperative navigation device for sentinel node retrieval and review other advances in SNB practice which have the potential to change the standard management for patients with early HNSCC.