Active clinical trials for "Polyps"

Megachannel is a newly developed colonic access system allowing rapid and multiple passes of the colonoscope to the right colon. The investigators want to conduct a multinational study to evaluate the safety and clinical feasibility of placing a 100 cm Megachannel prototype in the right colon.

This is a study to evaluate the cause of chronic sinus disease. Oral steroids have long been used in the treatment of inflammatory conditions including chronic sinusitis, asthma, and arthritis. However, it is not well known exactly which patients will benefit from steroids when used in the treatment of chronic sinusitis. For some doctors, it is common practice to use these medications prior to planned sinus surgery, to lessen the inflammation and possibly help the healing process. Other doctors feel oral steroids may not be helpful in this way, and there is no conclusive data as to whether this practice has a long term benefit.

The aim of the study is to perform a prospective, multicenter research comparing capsule endoscopy with the video colonoscopy in the detection of the adenomatous polyps and cancer specifically in a high risk population (sensibility, specificity, NPV, PPV and diagnostic accuracy). The investigators will used the Pillcam II™ colon capsule (second generation) and a high resolution colonoscope (with high definition). Both procedures will be perform in the same day with an adapted bowel preparation.

Colonoscopy screening is proven to reduce mortality rates for colorectal cancer, which relies on early detection and removal of colonic polyps. AmplifEYE is a FDA-approved device with a row of flexible detection arms attached to the tip of colonoscope which can separate colonic folds during scope withdrawal and is believed to improve polyp detection. Real-life clinical data on this relatively new device is lacking and this study aims to compare the adenoma and polyp detection rates in AmplifEYE-assisted colonoscopy versus standard colonoscopy.

The investigators hypothesize that the clinical implementation of a deep learning AI system is an optimal tool to monitor, audit and improve the detection and classification of polyps and other anatomical landmarks during colonoscopy. The objectives of this study are to generate preliminary data to evaluate the effectiveness of AI-assisted colonoscopy on: a) the rate of detection of adenomas; b) the automatic detection of the anatomical landmarks (i.e., ileocecal valve and appendiceal orifice).

This is a prospective, multicenter, randomized controlled study to evaluate the effect of the Computer-Assisted Detection (CADe) Device on Adenomas Per Colonoscopy and Positive Percent Agreement for routine colonoscopies. The control arm is colonoscopy performed with High Definition White Light Endoscopy (HD-WLE) per standard of care. The intervention arm is colonoscopy performed with HD-WLE per standard of care plus the Computer-Assisted Detection (CADe) Device.

This study aims to investigate the comparative effectiveness between polyp removal with or without electrical current. The investigators want to include 600 polyps in the trial. It is known that polyps have the potential to develop to cancer if left in situ, but the investigators do not know the best way to remove them completely.

This study is a randomized controlled trial to determine whether i-scan can improve the detection of conventional adenomas and sessile serrated adenomas/polyps.

Most colorectal cancers arise from polyps. Most polyps removed at colonoscopy are small. New technologies such as narrowband imaging (NBI) offer the possibility of in differentiation between precancerous and unimportant small polyps. Use of these technologies could decrease the costs and potentially the risks of screening and surveillance colonoscopy. Multiple studies have demonstrated the ability of experienced endoscopists to achieve high accuracy in differentiating polyp types using NBI. The investigators hypothesize that community-based endoscopists can learn to identify polyp type at colonoscopy with the aid of NBI through the use of an introductory didactic program, followed by practice based-learning, and that their experience can serve as guidelines for wider dissemination. The purpose of this study is to test an educational program combining a didactic program followed by practice-based learning that is designed to allow community-based endoscopists to become proficient at the use of NBI in the colon. This study will not affect the care of patients in any way. The research subjects will be the endoscopists, who will perform colonoscopy and polyp removal in the usual clinical fashion, with the addition of attempting to predict polyp type before resection.

Most of colorectal polyps founded during colonoscopy are diminutive polyps less than 6 mm. However, complete removal of diminutive polyps is required to prevent tumor recurrence and development of potential interval cancers. Currently, a variety of polypectomy techniques such as hot snare, cold snare, and cold forceps polypectomy are frequently used for the removal of diminutive colorectal polyps. In regard to the completeness of polypectomy, there are few data comparing cold snare polypectomy with cold forceps biopsy technique for removal of diminutive (1-5 mm) colorectal polyps. The aim of this study is to compare cold snare polypectomy with cold forceps polypectomy using double biopsy technique for removal of diminutive colorectal polyps.