Cancer is the uncontrolled and abnormal growth of cells that results in formation of a mass called tumor. This tumor can be cancerous or benign. Head and neck cancer is the terminology used to define a number of different malignant tumors that develop in or around the throat, larynx, nose, sinuses, and mouth. Furthermore, head and neck cancers initiate in squamous cells, cells that line moist surfaces such as those inside the head and neck (for example, the mouth, nose, and throat). Salivary glands have different types of cells that can turn cancerous. Chewing tobacco, excessive alcohol consumption, and infection with human papillomavirus (HPV) increases the risk of head and neck cancer. Other risk factors for head and neck cancers include excessive consumption of paan (betel quid), preserved or salted foods, oral health, occupational exposure, radiation exposure, Epstein barr virus infection, and due to hereditary causes.