View clinical trials related to Polyps.
Filter by:High quality bowel cleaning preparation was most important prerequisites of a accurate colonoscopy, because even a small amount of residual fecal matter can obscure small polyps and increase unnecessary procedure time. Until now, several studies evaluated the impact of bowel preparation on the quality of colonoscopy using comparison of the polyp detection rate in patients with adequate bowel preparation status to that in patients with inadequate bowel preparation status during colonoscopy. However, there was no direct measurement the effect bowel preparation status on the polyp missing rate, the quality of colonoscopy, using tandem colonoscopic evaluation in prospective setting.
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.
The purpose of this study is to develop a recommended local anesthetic protocol and post-treatment pain management regimen, in order to assure patient comfort during office-based treatment with the MyoSure Hysteroscopic Tissue Removal Device. Subject self-reported pain scores (as rated on an 11 point scale) will be compared at multiple time intervals between all treatment groups.
The purpose of the study is to verify if the ablation of lesions (polyps, adenomas) in the large (and small) intestine can be facilitated by using a traction on the lesions.
Prospective study of accuracy of colonic polyp characterisation in vivo using high resolution white light endoscopy, narrow band imaging and chromoendoscopy.
The purpose of this study is to evaluate the efficacy of the new RJ4 compare with the standard RJ3 biopsy forceps for performing polypectomy for small colorectal polyps.
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.
Colon cancer is the third most common cancer in western society. To prevent colon cancer it is recommended for people to undergo a screening colonoscopy at the age of fifty. The purpose of the colonoscopy is to remove polyps, since some of these lesions are precancerous. Precancerous polyps are called adenomas. This method of prevention is effective, but the standard colonoscopy currently used does not detect all polyps. Studies have reported a polyp miss rate of about 24%. Furthermore, we are unable to distinguish precancerous polyps from benign polyps, also known as hyperplastic polyps, with standard colonoscopy. This results in all polyps being removed at time of colonoscopy, even the benign polyps. To help improve the detection of colon polyps new endoscopic technologies have been developed. These technologies include high definition white light (HDWL)and high definition narrow band imaging (HDNBI). HDWL improves the overall resolution of the images seen during colonoscopy. HDNBI can help us better classify polyps by enhancing their tissue appearance as well as seeing small blood vessels and capillaries. The goal of this study to determine if HDNBI imaging shows an increased polyp detection rate when compared to the current standard colonoscopy. In addition to develop a classification system to help better differentiate between precancerous polyps and their benign counterparts using HDWL and HDNBI.
Colonoscopy is the accepted gold standard for screening of colorectal cancer. However, small and flat neoplastic lesions might be overlooked with standard video endoscopes. The new available EPKi system (Pentax, Japan) enables with HD+ imaging resolution above HDTV standard. Aim of the study was to test the efficacy of HD+ colonoscopy alone and in conjunction with I-Scan (newly developed post processing digital filter)in comparison to standard videoendoscopy
The purpose of this study is to determine if intranasal Beclomethasone delivered by aerosol or spray is more effective in treatment of nasal polyps.