^{Immunology and Oncology}

Head and Neck cancers usually begin in the squamous cells that line the moist, mucosal surfaces inside the head and neck (for example, inside the mouth, the nose, and the throat). These squamous cell cancers are often referred to as squamous cell carcinomas of the head and neck. Head and neck cancers can also develop in the salivary glands, but salivary gland cancers are relatively uncommon. Salivary glands contain different types of cells that can become cancerous, so there are many different types of salivary gland cancer. Cancers of the head and neck are further categorized by the area of the head or neck in which they begin from the Oral cavity, Pharynx, Larynx, Para-nasal sinuses and Nasal cavity, Salivary glands.