2016_Head & Neck COURSE BOOK

Global Incidence

Males

Females

• ASR (cases/100 000/year) is <1 among Caucasians compared to >20 among . Southern Chinese males • Chinese immigrant populations to western countries have progressively lower NPC  risk, but their incidence remains higher than the ‘native’ populations • NPC incidence rate in Chinese born in the Orient 20.5, compared with 1.3 for  Chinese born in Canada, and 0.2 for white people born in Canada • First‐degree relatives of NPC patients have 4–10 fold excess risk