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Squamous Cell Carcinoma

17

 

Nicole R. LeBoeuf, Lorraine M. Jennings,

Andrew E. Werchniak, and Chrysalyne D. Schmults

Abstract

Cutaneous squamous cell carcinoma (SCC) is the second most common cutaneous malignancy in the USA, accounting for 20% of non-melanoma skin cancers. Among Caucasians, it is the second most common cancer overall. Although the great majority of cases are cured by surgery or other treatments, deaths from SCC may be nearly as common as those from melanoma. Identification of patients at risk for untoward outcomes as well as clarity regarding appropriate staging and management, particularly of high-risk tumors, is imperative. This chapter discusses the current state of knowledge regarding the pathophysiology leading to cutaneous SCC, risk factors for its development, and the clinical spectrum of squamous dysplasia with particular attention given to high-risk and invasive disease. It provides an in-depth discussion of the available data regarding surgical and non-surgical management of cutaneous SCC, particularly of high-risk tumors.

Keywords

Squamous cell carcinoma (SCC) • Immunosuppression • Human papilloma virus (HPV) • Organ transplant recipient (OTR) • Ultraviolet (UV) light • Radiation • Mohs surgery

N.R. LeBoeuf (*)

Department of Dermatology, Dana Farber Cancer Institute/ Brigham and Women’s Hospital,

Boston, MA, USA

e-mail: nleboeuf@partners.org

L.M. Jennings

Department of Mohs Micrographic Surgery, Department of

Dermatology, Dana Farber Cancer Institute/Brigham and

Women’s Hospital,

Boston, MA, USA

A.E. Werchniak

Department of Dermatology, Dana Farber Cancer Institute/

Brigham and Women’s Hospital,

Boston, MA, USA

C.D. Schmults

Department of Dermatologic Surgery, MOHS Micrographic

Surgery Center, Brigham and Women’s Hospital,

Boston, MA, USA

Summary: Introduction

Cutaneous squamous cell carcinoma is increasing in frequency, and based on incidence data, may result in as many deaths as melanoma in some regions of the US. Prognostic models predicting who is at risk of metastasisanddeatharelacking.Subsequently, there is little consensus regarding staging and management of high-risk patients.

K. Nouri (ed.), Mohs Micrographic Surgery,

189

DOI 10.1007/978-1-4471-2152-7_17, © Springer-Verlag London Limited 2012