INTRODUCTION Nonmelanoma skin cancer is the most common malignancy in white individuals. The risk factors for squamous cell carcinoma, which belongs to the family of nonmelanoma skin cancers, have not been studied in Colombia. OBJECTIVE To determine the risk factors for squamous cell carcinoma in patients at a national referral center for skin diseases in Colombia. MATERIAL AND METHODS We c...

Telemedicine is a rapidly developing application of clinical medicine where medical information is transferred through interactive audiovisual media for the purpose of consulting remote medical procedures or examinations, reducing the time of consultation for patients. Teledermatology as an application of telemedicine was developed in 1995: it turns out to be a gradually more ordinary mean of d...

Previous reports of cancer after kidney transplantation have been limited by small numbers of patients in single-center studies and incomplete ascertainment of cases in large registries. We examined rates of malignancies among first-time recipients of deceased or living donor kidney transplantations in 1995-2001 (n = 35 765) using Medicare billing claims. For most common tumors, e.g. colon, lun...

Photodamage is known to occur in skin with exposure to sunlight, specifically ultraviolet (UV) radiation. Such damage includes inflammation, oxidative stress, breakdown of the extracellular matrix, and development of cancer in the skin. Sun exposure is considered to be one of the most important risk factors for both nonmelanoma and melanoma skin cancers. Many phytonutrients have shown promise a...

BACKGROUND Recent reports have shown that telomere length was associated with the risk of various cancers, but the results have been inconsistent. METHODS We prospectively evaluated the association of telomere length in peripheral blood leukocytes with the risk of skin squamous cell carcinoma (SCC) in 241 cases and 241 controls within the Health Professionals Follow-up Study (HPFS), and the r...

With approximately 3.5 million cases diagnosed each year, nonmelanoma skin cancer (NMSC) is the most common form of cancer. NMSC results in about 3000 deaths each year and the cost of treatments is estimated to exceed $ 600 million each year [1]. The most effective form of NMSC treatment is Mohs Micrographic Surgery (MMS) which involves removing cancer layer by layer while simultaneously proces...

The eyelid region is one of the most common sites for nonmelanoma skin cancers. In fact, skin cancers of the eyelid, including basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and melanoma, account for five to ten percent of all skin cancers. Ninety five percent of these tumors are basal cell carcinomas or squamous cell carcinomas [1,2]. A lower-eyelid reconstruction after cancer exti...

M e t h o d s Design: Randomized placebo-controlled trial (Women’s Health Study [WHS], a randomized 2 × 2 factorial trial). Allocation: Concealed.* Blinding: Blinded {participants, health care providers, data collectors, and outcome assessors}†.* Follow-up period: Mean 10.1 years. Setting: {A mail-based trial in female health care professionals in the United States}†. Participants: 39 876 women...

This chapter proposes a novel hierarchical classification system based on the K-Nearest Neighbors (K-NN) model and its application to nonmelanoma skin lesion classification. Color and texture features are extracted from skin lesion images. The hierarchical structure decomposes the classification task into a set of simpler problems, one at each node of the classification. Feature selection is em...