Prognostic Markers for a Better Follow-up in Head and Neck Cancer.

A piece from tumor and a blood sample will be collected during surgery. DNA will be extracted and presence of tumor specific mutations/aberrations will be analysed with a DNA exome seq panel. Presence of identified markers will be followed in blood samples with the same panel and these blood samples will be collected in routine follow-up during the first two years. Presence of markers over time in blood will be correlated to outcomes 1-5.