Assessment and management of metastatic neck disease
Tumour spread to the neck can occur from any primary sites that can harbour squamous cell carcinoma (SCC) in the upper aerodigestive tract (UADT) mucosa. This can also happen with other histological subtypes and from primary sites in the parotid and thyroid gland. Thus, the assessment of the neck should form an integral part of the clinical examination, imaging, and decision-making process prior to deciding treatment of the primary tumour. Given the propensity of these tumours to spread to the lymph nodes and given that the treatment algorithms used to manage lymph nodes in the neck are similar to those options available for the primary site, neck status often influences the choice of treatment. This chapter outlines the assessment and management of the metastatic neck node from an SCC of the UADT. To ensure uniformity in describing and communicating information about neck disease, the neck is divided into six levels, as recommended by the American Head and Neck Society and the American Academy of Otolaryngology–Head and Neck Surgery.