Related Experiment Video
Updated: May 16, 2026

Competing-Risk Nomogram for Predicting Cancer-Specific Survival in Multiple Primary Colorectal Cancer Patients after Surgery
Published on: September 27, 2024
Colorectal cancer screening: practice guidelines
1Division of Gastroenterology and Hepatology, Oregon Health and Science University, Portland, OR 97239, USA. lieberma@ohsu.edu
Abstract:
Colorectal cancer (CRC) screening has been demonstrated to reduce both incidence and mortality of CRC. There are several different screening options, each with potential benefits and some limitations. Fecal blood tests are primarily early cancer detection tests, which have been shown to reduce CRC mortality. Structural exams of the colon (flexible sigmoidoscopy, colonoscopy and imaging) may identify cancer precursor lesions (adenomas) and early cancer. There is evidence that detection and removal of adenomas may prevent many cancers. New forms of screening using stool DNA, capsule endoscopy and serum testing for genetic mutations are still in evolution, though proof-of-principle studies have been published.
Related Concept Videos
Endoscopic Procedures II: Colonoscopy
Cancer Prevention
Some...
Cancer Prevention
Some...
Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...
Serum Laboratory Studies, Stool Test, Breath Test
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy
Sigmoidoscopy
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...