Active clinical trials for "Polyps"

Cold polypectomy has the advantages of simple operation, less time-consuming and fewer complications. Guidelines have recommended cold snare polypectomy (CSP) to resect small polyps sized <9 mm. CSP was designed to improve the complete resection rate and reduce adverse events. Investigators hypothesize that CSP is better than conventional hot snare endoscopic mucosal resection (HS-EMR) in the presence of injured submucosal arteries detected in the submucosal layer for 10-19 mm nonpedunculated colorectal polyps, resulting in lower delayed bleeding after CSP of 10-19 mm nonpedunculated colorectal polyps.

The aim of this study is to evaluate the effect of the primary endoscopic frontal sinus surgery on the clinical outcome in patients having moderate to severe eosinophilic chronic rhinosinusitis with polyps with primary outcome measures in form of recurrence of polyp using endoscopic polyp score and Secondary outcome measures include Lund MacKay score, SNOT-22 and need for corticosteroid to control polyp postoperatively.

Chronic rhinosinusitis with nasal polyps is a common nasal comorbidity with a wide range of symptoms that might cause severe distress and disabilities for patients. Many patients undergo repeated courses of systemic steroids and are exposed to various adverse effects. many cases finally revert to surgery. Budesonide was safely used as a nasal wash in cases of nasal polyps, our aim to determine If intrapolyp injection is a better method for delivering budesonide.

The purpose of this study is to compare the efficacy and safety of rimegepant versus placebo in the acute treatment of chronic rhinosinusitis (CRS) with and without nasal polyps.

Functional endoscopic sinus surgery (FESS) is the pimary surgical treatment of CRS, characterized with the preservation of nasal structure and function.But the control of disease by surgery has been unsatisfactory. Recent studies have shown that patients with recurrent CRSwNP (usually with severe eosinophilic inflammation), more radical surgery may be more effective. The purpose of this prospective and randomized study is to determine the effect of endoscopic sinus surgery for extensive mucosal removal in patients with eosinophilic chronic rhinosinusitus with nasal polyps.

This is a prospective, randomized, open-label, non-inferiority, multiple-center trial. Outpatients who are scheduled to undergo colonoscopy and found eligible polyps will be randomized to receive either cold snare endoscopic mucosal resection (CS-EMR) or hot snare endoscopic mucosal resection (HS-EMR). This study aims to compare the efficacy and safety of CS-EMR or HS-EMR for the resection of non-pedunculated colorectal polyps sized 10-19mm.

Endoscopic resection of pedicled polyps mainly focuses on how to prevent bleeding, and also needs to pay attention to the convenience of resection and the integrity of resection, which means that different endoscopic resection strategies should be adopted for pedicled polyps with different pedicle sizes. The head larger than 20mm or pedicle larger than 5mm are defined as large pedicle polyps, which are at greater risk of bleeding. Current guidelines recommend hot removal by snare following preoperative saline injection, ligation of the pedicle with a nylon ring or metal clip, depending on the size of the polyp head and pedicle. However, the use of snares and metal clamps does not appear to reduce delayed postoperative bleeding, and the technical requirements of nylon ligation are relatively high. Recent studies have found that Underwater endoscopic mucosal resection (UEMR) is also safe and effective for the treatment of large and medium colorectal stemless polyps. Therefore, it is still necessary to further explore new safe and effective endoscopic resection strategies and techniques.

This is a multi-center, randomized, double blind, placebo-controlled study to evaluate the efficacy, safety, PK, PD and immumogenicity of GR1802 injection in comparison to placebo in addition to a background treatment of mometasone furcate nasal spray (MFNS) in patients with chronic rhinosinusitis with nasal polyposis (CRSwNP). Patients will receive GR1802 injection or Placebo every 2 Weeks.

The study is being conducted to evaluate the efficacy, and safety of SHR-1905 injection in subjects with chronic rhinosinusitis with nasal polyps (CRSwNP), as well as to explore the reasonable dosage of SHR-1905 injection for CRSwNP.

A prospective, randomized, controlled study to compare the efficacy and safety of underwater endoscopic mucosal resection and conventional endoscopic mucosal resection in removal of non-pedunculated colorectal polyps