**2.2 The role of radiotherapy in major types of head and neck cancers**

The role of radiotherapy in the radical treatment of five types of head and neck cancers including cancers of the nasopharynx, oral cavity, larynx, maxillary sinus, and parotid gland is discussed in this section. Intensity-modulated radiotherapy is a standard radiotherapy technique used. The benefit of IMRT is that it is capable of delivering highly conformal doses to the target while sparing the nearby organs at risk (OARs).
