View clinical trials related to Polyp of Large Intestine.
Filter by:This is a single centre, prospective, non-randomised pivotal clinical investigation to be undertaken at St Mark's Hospital, Harrow, UK.
The purpose of this study is to determine whether hemodynamic optimization with photoplethysmography (ClearSight, Edwards Lifesciences, Irvine, CA) during colorectal surgery could decrease the incidence of perioperative complications.
Colorectal cancer is a major cause of morbidity and mortality in Western countries. Scientific studies have shown that endoscopic polypectomy is efficacious in preventing CRC incidence and mortality. Endoscopic polypectomy carries a risk of major complications, such as bleeding or bowel perforation, so that a careful balance between efficacy and safety appears to be clinically relevant. Most of the polypectomies are performed for diminutive (<5 mm) or small (6-9 mm) lesions, which represent over 90% of all the polyps. To minimize the risk of complications when removing <10 mm polyps, cold-polypectomy techniques - i.e. without electric current - by means of biopsy forceps or snare, have been proposed. Although the risk of perforation is virtually excluded by cold-polypectomy, the lack of electrocautery may result in an increased risk of bleeding. The safety of cold-snare polypectomy has however been recently shown in controlled trials. Regarding the efficacy of cold-polypectomy for subcentimetric polyps, very few studies have assessed the post-polypectomy completeness of the removal of polyp tissue (i.e. residual disease), and no studies have compared it to conventional polypectomy. The investigators perform this study to assess both the efficacy and safety of a novel snare (Exacto™) for polyp removal.
The complete removal of colorectal polyp is required to prevent tumor recurrence and development of potential interval cancers. However, several studies have shown high incomplete resection rate in endoscopic removal of neoplastic colorectal polyps larger than 5 mm. The polypectomy techniques using hot snare are usually used for the removal of these polyps. However, the optimal technique for complete resection of these polyps is unknown. There are few data comparing hot snare polypectomy with hot snare polypectomy after saline injection for complete resection of colorectal polyps (5mm or larger). The aim of this study is to compare hot snare polypectomy with hot snare polypectomy after saline injection for removal of 5-10mm sized colorectal polyps.
The purpose of this study is to compare cold snare polypectomy and cold forceps polypectomy using narrow-band imaging endoscopy for removal of diminutive colorectal polyps.
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.
The aim of this study is to evaluate the efficacy of prophylactic clip application after colonoscopic removal for a large pedunculated polyp (> 1cm) in preventing immediate postpolypectomy bleeding (IPPB) and delayed postpolypectomy bleeding (DPPB).