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IPLab:Lab 7:Lip SCC

119 bytes added, 04:20, 23 August 2013
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* <spoiler text="What risk factors are associated with oral squamous cell carcinoma?">Tobacco and alcohol. Nondrinking smokers have a 2- to 4-fold greater risk of developing these cancers than matched control subjects, which increases to 6- to 15-fold with both drinking and smoking. The risk of cancer is quantitatively associated with the amount of smoking and of alcohol consumption. Chewing tobacco and buccal pouches are the highest risk.</spoiler>
* <spoiler text="What is the prognosis with this type of tumor?">The prognosis is best with lip lesions--the 5-year recurrence-free rate approximating 90%--and poorest with tumors in the floor of the mouth and at the base of the tongue--yielding only 20 to 30% 5-year recurrence-free rates. All squamous cell carcinomas of the oral cavity take months to years to progress from carcinoma in situ (after being preceded by leukoplakia) to invasive cancer.</spoiler>
 
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{{IPLab 7}}
[[Category: IPLab:Lab 7]]
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