Sonographic imaging of the lymph nodes (LNs) of the neck is used to differentiate between those that are benign or suspicious of malignancy. The size, number and location of suspicious appearing LNs must be documented and reported. Cervical LN location should be described in terms of surgical neck levels. Knowledge of the sonographic differentiation between benign and suspicious appearances of LNs, and surgical neck levels is required, including sonographic landmarks that can be used to correctly locate LNs to a specific neck level.