Alternatively , the oral cancers may originate in any of the tissues of the mouth , and may be of varied histologic types : teratoma , adenocarcinoma derived from a major or minor salivary gland , lymphoma from tonsillar or other lymphoid tissue , or melanoma from the pigment-producing cells of the oral mucosa .
The oral cancers may originate in any of the tissues to the mouth , and may be of varied histologic types : teratoma , adenocarcinoma derived from a major or minor salivary gland , lymphoma from tonsillar or other lymphoid tissue , or melanoma from the pigment-producing cells of the oral mucosa .