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WHO Classification of Tumours
Squamous cell carcinoma, NOS
Bronchus and lung


Definition

A carcinoma arising from squamous epithelial cells, morphologically characterized by the proliferation of atypical, often pleomorphic squamous cells. Squamous cell carcinomas are graded as well, moderately, or poorly differentiated. Well differentiated carcinomas are usually associated with keratin production and the presence of intercellular bridges between adjacent cells.
Typical sites of squamous cell carcinomas include the head and neck region, repiratory tract, skin and cervix.