Squamous cell carcinoma (SCC) is a form of cancer of the carcinoma type that may occur in many different organs, including the skin, lips, mouth, esophagus, urinary bladder, prostate, lungs, vagina and cervix. This new book presents topical research in the study of the ontogeny of squamous cell carcinoma with a focus on the regulation of cell proliferation in oral squamous cell carcinoma. Also discussed is squamous cell carcinoma arising in epidermal cysts and human papillomavirus associated cysts and oral cuniculatum carcinoma.