HPV positive tumours

HPV negative tumours

Anatomical site

Tonsil & base of tongue

All sites

Histology

Non-keratinised

Keratinised

Age

Younger Cohorts

Older cohorts

Sex ratio

3:1 men

3:1 men

Stage

Tx, T1-2

Variable

Risk factors

Sexual behaviour

Alcohol & tabacco

Incidence

Increasing

Decreasing

Survival

Improved

Unchanging