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Cancer Epidemiology and Prevention$
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Michael Thun, Martha S. Linet, James R. Cerhan, Christopher A. Haiman, and David Schottenfeld

Print publication date: 2017

Print ISBN-13: 9780190238667

Published to Oxford Scholarship Online: December 2017

DOI: 10.1093/oso/9780190238667.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2020. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 20 September 2020

Keratinocyte Cancers

Keratinocyte Cancers

Chapter:
(p.1089) 58 Keratinocyte Cancers
Source:
Cancer Epidemiology and Prevention
Author(s):

Anala Gossai

Dorothea T. Barton

Judy R. Rees

Heather H. Nelson

Margaret R. Karagas

Publisher:
Oxford University Press
DOI:10.1093/oso/9780190238667.003.0058

Keratinocyte cancers (KC) include basal and squamous cell carcinomas that arise from keratinocytes or their precursors. KCs are the most common malignancies in humans. Basal cell carcinoma (BCC) has higher incidence rates, but squamous cell carcinoma (SCC) causes most deaths. Despite increasing incidence rates, the mortality rates have not changed markedly in recent years. The geographic and demographic features of these tumors have remained consistent over the past several decades, with a gradient of increasing incidence rates with proximity to the equator, predominantly affecting fair-skinned populations. Risk increases with age, is higher in men than women, and is associated with artificial as well as natural exposure to UV light. There is emerging evidence that these malignancies, particularly BCCs, may be increasing in younger adults and among women. While basal and squamous cell carcinomas share etiological factors, the relative importance of these factors, pattern of exposure, molecular alterations, and even the factors themselves differ.

Keywords:   keratinocyte cancer, basal cell carcinoma, squamous cell carcinoma, exposure, etiology, mortality rate

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