Published online Jul 14, 2015. doi: 10.3748/wjg.v21.i26.7944
Peer-review started: November 29, 2014
First decision: February 10, 2015
Revised: March 4, 2015
Accepted: April 16, 2015
Article in press: April 17, 2015
Published online: July 14, 2015
Processing time: 227 Days and 7.1 Hours
Colorectal cancer (CRC) is the third leading cause of death worldwide and represents a clinical challenge. Family members of patients affected by CRC have an increased risk of CRC development. In these individuals, screening is strongly recommended and should be started earlier than in the population with average risk, in order to detect neoplastic precursors, such as adenoma, advanced adenoma, and nonpolypoid adenomatous lesions of the colon. Fecal occult blood test (FOBT) is a non invasive, widespread screening method that can reduce CRC-related mortality. Sigmoidoscopy, alone or in addition to FOBT, represents another screening strategy that reduces CRC mortality. Colonoscopy is the best choice for screening high-risk populations, as it allows simultaneous detection and removal of preneoplastic lesions. The choice of test depends on local health policy and varies among countries.
Core tip: One-fifth of people who develop colorectal cancer (CRC) have a first-degree relative (FDR) affected by this malignancy. Screening is an efficient method to reduce mortality for CRC and should be started in FDRs earlier than in the population at average risk. There is a large disparity in guidelines for screening in familial CRC, therefore, here we address the principal indication and methods for screening in this population at increased risk. Recent or emerging methods to improve the participation rate in screening programs are described. Ongoing trials on CRC screening are also reported.