Head and neck cancer (HNC) is the seventh most common type of cancer in the world, mainly affects men, and includes a heterogeneous group of malignant neoplasms in the upper aerodigestive tract. 1,2 HNC affects the oral cavity, oropharynx, salivary glands, paranasal sinuses, nasopharynx, hypopharynx and larynx. 3 Worldwide, it is estimated that 500 000 new cases are diagnosed annually, two-thirds of them are happening in developing countries and that 300 000 will die from the disease. 3,4 Depending on the population, the most