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|Classification and external resources|
In biopsy, the three exophytic masses turn out to be oral carcinomas, while the surrounding hyperkeratotic area shows histologic features of oral lichen planus.
Oral cancer is any cancerous tissue in the mouth. It can present as a primary lesion in any of the tissues, by metastasis from a distant site of origin, or by extension from a neighboring anatomic structure, such as the nasal cavity. 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. There are several types of oral cancers, but around 90% are squamous cell carcinomas, originating in the tissues that line the mouth and lips. Oral or mouth cancer most commonly involves the tongue. It can also occur on the floor of the mouth, cheek lining, gums, lips, or palate (roof of the mouth). Most oral cancers look very similar under a microscope and are called squamous-cell carcinoma.
References[change | change source]
- Werning, John W (June 9, 2013). Oral cancer: diagnosis, management, and rehabilitation. p. 1. .
- "Oral Cancer Facts". Oral Cancer Foundation website. 10 May 2013. http://www.oralcancerfoundation.org/facts/index.htm. Retrieved 11 June 2013.