Chemoprevention in Sporadic Colorectal Cancer: The Role of Salycilates,Nsaids and Coxibs
Manzano A and Pérez-Segura P*
Department of Oncology, Hospital Clínico San Carlos, Madrid, Spain
- *Corresponding Author:
- Pérez-Segura P
Department of Oncology
Hospital Clínico San Carlos
E-mail: [email protected]
Received Date: November 15, 2011; Accepted Date: December 13, 2011; Published Date: December 15, 2011
Citation: Manzano A, Pérez-Segura P (2011) Chemoprevention in Sporadic Colorectal Cancer: The Role of Salycilates, Nsaids and Coxibs. J Cancer Sci Ther S3:005. doi: 10.4172/1948-5956.S3-005
Copyright: © 2011 Manzano A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Sporadic colorectal cancer (CRC) represents 75% of the total of the CRC cases diagnosed and is the second leading cause of cancer death with a a 5-year survival rate of 62%. The development of colorectal cancer is a complex process involving multiple molecular pathways, since the formation of adenomas to the development of carcinoma in the digestive tract (the so-called “adenoma-carcinoma sequence”), in a process that can last several decades. Thus adenomas are considered a surrogate variable for the development of CRC in clinical trials. Although screening strategies (blood in stool, endoscopic and CT-colonoscopy) have supposed a great advance in the early detection of these tumours, they are associated with inconveniences such as their cost and associated morbidity. Moreover screening does not necessarily prevent the development of cancer or prevent mortality. Therefore, interest in primary prevention research has increased in recent years. In this regard, multiple attempts to modify lifestyle and dietary factors to try to reduce the incidence of cancer have been promoted. However, some studies, many of them observational or case-control, have yielded conflicting data. Consequently, in the past 20 years, chemoprevention studies have grown in importance.