There are various techniques to perform colon and rectal examination but sigmoidoscopy is preferred over other methods. Sigmoidoscopy is used to study the last section of the colon, sigmoid colon. What are the advantages of sigmoidoscopy? Why is it preferred over other techniques? This article will help you to find answers to these questions.

Colorectal cancer (CRC) is one of the most occurring cancers in the world in terms of incidence. The majority of CRC arise from adenoma, the process is known as the adenoma-carcinoma sequence and are therefore amenable to screening and early treatment. Colonoscopy, which is the gold standard for the diagnosis of colonic polyps and neoplasm, is costly, invasive and labour-intensive, and deemed as an unsuitable population-wide index screening tool. Alternative techniques for colon and rectal diagnosis includes Guaiac and immunohistochemical faecal…