Oral carcinoma is one of the most prevalent cancers & is one of the 10 major cause of death. Majority of oral carcinomas are squamous cell carcinomas. it is disease of increasing age with 95%cases in people older then 40 years of age.
Cancer is a commonly used term for all malignant tumors. In Latin language, cancer means crab which has a fat main body and mass extention which springs and invade the surrounding tissues.
Tumor is an autonomous new growth of tissue or it is an abnormal mass of tissue the growth of which exceedds and is uncoordinated with that of normal tissue and persists in the same excessive manner even after the cessation of stimuli which evoked the changes.
From: http://pediatricdentists.blogspot.com/2011/11/oral-cancer.html#.TrEVAEC27BY.pingfm
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