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What is Squamous cell carcinoma of the lip is least likely to develop in which of the following? and explain in detail?
Squamous carcinoma of the lip comprises 15-20% of all malignant tumors of the oral cavity. In approximately 30%, there is a clear association with heavy exposure to the sun. The incidence increases in those areas where there is more southerly latitude, the air is dry, and the altitude is higher.