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p6 - guest1
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03-13-2008, 07:48 AM
Which of the following locations is most likely for the development of carcinoma in a 32-year-old baseball player
who has chewed tobacco for 15 years? A. Floor of the mouth B. Lower lip C. Tongue D. Tonsils E. Upper lip
03-13-2008, 07:58 AM
i would say lower lip for squamous cell...but buggs me the chewing tobacco as ...>squamous cell ca for tongue
03-13-2008, 08:01 AM
Explanation:
The correct answer is B. Oral cancer is most strongly related to tobacco chewing, with weaker associations with cigarette smoking, pipe smoking, and alcohol use. Unfortunately, many teenagers believe that chewing tobacco is "harmless" because it does not cause lung cancer, and the case illustrated in the question is unfortunately not uncommon. Oral cancers tend to occur on the lower lip (40%; choice B), tongue (20%; choice C), floor of the mouth (15%; choice A), with other oral sites (choices D and E) being less common. They are usually squamous cell carcinomas and unlike their skin counterparts, frequently cause both extensive morbidity and mortality. |
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