ABSTRACT
Head and neck neoplasm is divided into two major groups. The largest group, the epithelial malignancies of the mucosal membranes of the upper aero-digestive tract, is called head and neck squamous cell carcinoma (HNSCC) and accounts for 90% of all head and neck neoplasms. The second important but smaller group are the glandular neoplasms, arising in the thyroid and in the salivary glands. Infrequent head and neck tumors include localized lymphoma, soft tissue tumors, peripheral nerve sheath tumors, and neuroectodermal tumors [1].
