作者: Richard W. Nason , James B. Butler
DOI: 10.1007/978-1-60327-969-7_8
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摘要: The number of new mucosal cancers the upper aerodigestive tract in Canada each year exceeds 4,500 cases, with about 700 deaths [1] (2.8 % cancer cases and 2.3 cancer-related deaths). estimated age standardized incidence for oral by Province ranges from 9 to 14 per 100,000 population males 4 6 females. Larynx is single most common site. across provinces varies 3 8 100,000. There appears be a relatively higher these Atlantic Provinces, Quebec, Manitoba. Higher historical smoking rates have been documented Quebec Provinces. annual laryngeal declining both females 3.6–3.4 annually, mortality rate among decreasing [1].