2016_Head & Neck COURSE BOOK

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NASOPHARYNX

EPIDEMIOLOGY

Annual incidence in USA and Europe: <1/100,000 ( Nonkeratinizing differentiated carcinoma) Annual incidence in China (Guangzhou) : 30/100,000 ( Nonkeratinizing undifferentiated carcinoma)

M :F=2-3:1 Age:

China and South-East Asia: 5th-6th decade North Africa: 2nd (20%) and 6th decade

mercoledì 29 giugno 16

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