Physicians using narrow band imaging-assisted optical diagnosis for small colorectal polyps during colonoscopies did not achieve adequate accuracy levels, according to findings from a study in Gut that tested the technique with 28 trained colonoscopists. Researchers said the technique should not be used in routine clinical practice settings outside of academic centers. "Discard 2 demonstrated that in routine clinical practice clinicians could not accurately differentiate between hyperplastic and adenomatous polyps,” said UK researcher Dr. Colin Rees.
A growing number of physicians and researchers say gastrointestinal bacteria may play a role in diagnoses such as anxiety, obsessive-compulsive disorder and attention-deficit/hyperactivity disorder. Some studies have focused on high levels of the metabolite HPHPA, a byproduct of the clostridia bacterium that is linked to dopamine regulation. "The gut bacteria talk to the brain in multiple ways through either the immune system or the enteric nervous system," said McMaster University professor Jane Foster.
Data from more than 77,000 obese people in Sweden found obesity surgery was linked with a higher risk of colorectal cancer over the long term, researchers reported. They said the findings suggest a need to consider colonoscopy screening for patients who have obesity surgery.
ACG Trustee Dr. Mark B. Pochapin, director of the Division of Gastroenterology at New York University Langone Medical Center, narrates a tour of a patient's colon while performing a colonoscopy, during which he discovers a cancerous polyp. The patient did not have any abdominal or rectal pain, or any other symptoms associated with colorectal cancer. However, prior to this colonoscopy (when the cancer was discovered) the patient was diagnosed with anemia due the slow bleeding of the polyp. Watch now.
A multivariate analysis of more than 1,900 patients who had at least one polyp removed during a colonoscopy found that there was a 2.5-fold higher likelihood of high-risk recurrence if more than three polyps were found at the baseline colonoscopy. "Individuals who fit the high-risk profile should be targeted more closely for lifestyle factor modification and be given high priority for surveillance colonoscopy," the researchers said.