Published in Cancer Weekly, February 3rd, 2004
According to a study from France, "Oral leukoplakia, oral submucous fibrosis, and erythroplakia are three major types of oral premalignant lesions. Multiple oral premalignant lesions may possibly develop due to field cancerization, where carcinogenic exposures can cause simultaneous genetic defects to the upper aerodigestive tract epithelium, putting the epithelium at high risk for development of premalignant lesions at different stages of carcinogenesis.
"There have been no epidemiological studies on risk or protective...
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