The cancer type that accounts for 90% of oral and oropharyngeal cancers is which?

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Multiple Choice

The cancer type that accounts for 90% of oral and oropharyngeal cancers is which?

Explanation:
Most cancers of the oral cavity and oropharynx come from the surface squamous epithelium that lines these tissues. This makes oral squamous cell carcinoma the predominant type, accounting for about 90% of cases. Other options don’t fit because adenocarcinoma starts in glandular tissue, which isn’t the main lining of the mouth; basal cell carcinoma is mainly a skin cancer and is rare inside the mouth; and melanoma can occur in the oral mucosa but is uncommon compared with squamous cell carcinoma. That’s why the most common cancer in this region is oral squamous cell carcinoma.

Most cancers of the oral cavity and oropharynx come from the surface squamous epithelium that lines these tissues. This makes oral squamous cell carcinoma the predominant type, accounting for about 90% of cases. Other options don’t fit because adenocarcinoma starts in glandular tissue, which isn’t the main lining of the mouth; basal cell carcinoma is mainly a skin cancer and is rare inside the mouth; and melanoma can occur in the oral mucosa but is uncommon compared with squamous cell carcinoma. That’s why the most common cancer in this region is oral squamous cell carcinoma.

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