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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 .
The primary cause of skin cancer is prolonged exposure to ultraviolet (UV) radiation from the sun or tanning devices. Skin cancer is the most commonly diagnosed form of cancer in humans. [11] [12] [13] There are three main types of skin cancers: basal-cell skin cancer (BCC), squamous-cell skin cancer (SCC) and melanoma. [1]
neglected squamous cell carcinoma skin of scalp Advanced squamous cell carcinoma, excision specimen. Note invasion subcutaneous tissue. Cutaneous squamous-cell carcinoma (cSCC), also known as squamous-cell carcinoma of the skin or squamous-cell skin cancer, is one of the three principal types of skin cancer, alongside basal-cell carcinoma and melanoma.
Squamous-cell carcinoma is a cancer of the squamous cell, a kind of epithelial cell found in both the skin and mucous membranes. It accounts for over 90% of all head and neck cancers, [ 89 ] including more than 90% of throat cancer. [ 22 ]
A koilocyte is a squamous epithelial cell that has undergone a number of structural changes, which occur as a result of infection of the cell by human papillomavirus (HPV). [1] Identification of these cells by pathologists can be useful in diagnosing various HPV-associated lesions.
Verrucous carcinoma (VC) is an uncommon variant of squamous cell carcinoma. [1] This form of cancer is often seen in those who chew tobacco or use snuff orally, so much so that it is sometimes referred to as "Snuff dipper's cancer".
This tumor is not encapsulated and is characterized by squamous cells, mucus-secreting cells, and intermediate cells. [ 4 ] Histopathologic image of mucoepidermoid carcinoma of the major salivary gland.
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]