Patterns of lymph node metastasis of parotid cancer

For patients with clinically positive lymph nodes, ipsilateral modified radical neck dissection (levels I-V) is recommended. Elective neck dissection is strongly recommended for patients with T3N0 or T4N0 disease, and the extent of ND should include at least level I/II. PORT for patients with high-risk features may improve the outcome of good neck control.