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A large squamous cell carcinoma of the tongue as seen on CT imaging Histopathologic appearance of a poorly differentiated squamous cell carcinoma specimen. Hematoxylin-eosin stain. p16 positive, EBV negative. Diagnosis of oral cancer is completed for (1) initial diagnosis, (2) staging, and (3) treatment planning.
Squamous-cell carcinoma (SCC), also known as epidermoid carcinoma, comprises a number of different types of cancer that begin in squamous cells. [1] These cells form on the surface of the skin, on the lining of hollow organs in the body, and on the lining of the respiratory and digestive tracts .
Squamous cell carcinoma of the mouth. Oral cancer affects the areas of the mouth, including the inner lip, tongue, floor of the mouth, gums, and hard palate. Cancers of the mouth are strongly associated with tobacco use, especially the use of chewing tobacco or dipping tobacco, as well as heavy alcohol use.
Oropharyngeal cancer, [1] [2] [3] also known as oropharyngeal squamous cell carcinoma and tonsil cancer, [1] is a disease in which abnormal cells with the potential to both grow locally and spread to other parts of the body are found in the oral cavity, in the tissue of the part of the throat that includes the base of the tongue, the tonsils, the soft palate, and the walls of the pharynx.
A survey of 23 countries between 1983 and 2002 showed an increase in oropharyngeal squamous cell carcinoma that was particularly noticeable in young men in economically developed countries. [220] [12] In the United Kingdom the incidence of oral and oropharyngeal cancer in men rose 51%, from 7/100,000 to 11/100,000 between 1989 and 2006. [233]
Carcinoma of the tonsil is a type of squamous cell carcinoma. The tonsil is the most common site of squamous cell carcinoma in the oropharynx. It comprises 23.1% of all malignancies of the oropharynx. [1] The tumors frequently present at advanced stages, and around 70% of patients present with metastasis to the cervical lymph nodes. [2].
Laryngeal cancer may spread by: direct extension to adjacent structures, metastasis to regional cervical lymph nodes, or via the blood stream. The most common site of distant metastases is the lung. Laryngeal cancer occurred in 177,000 people in 2018, and resulted in 94,800 deaths (an increase from 76,000 deaths in 1990).
Verrucous carcinoma may occur in various head and neck locations, as well as in the genitalia or sole of the foot. The oral cavity is the most common site of this tumor. [6] The ages range from 50 to 80 years with a male predominance and a median age of 67 years. [7]
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