The PDQ cancer information summaries are reviewed regularly and updated as new information becomes available. This section describes the latest changes made to this summary as of the date above.

Untreated Metastatic Squamous Neck Cancer With Occult Primary ¹

Added text ² to state that intensity-modulated radiation therapy may have less short- and long-term toxicity than conventional radiation therapy in terms of xerostomia, acute dysphagia, and skin fibrosis (cited Madani et al. as reference 7).