View clinical trials related to Polyps.
Filter by:Endoscopic sinus surgery (ESS) has become the standard of care for patients suffering of chronic rhinosinusitis with nasal polyposis (CRSwP) who have failed medical therapy. The goal of surgery is now to widely marsupialize the sinus cavities in order to optimize topical steroid irrigation treatment in the postoperative period. With that being said, the true extent of surgery needed for optimal patient outcome has yet to be elucidated. More specifically, in the last 30 years, people have argued about the best way to manage the middle turbinate. Some state that it should be preserved at all times to protect the sinus cavities from inhaled irritants and allergens and keep this surgical landmark untouched for future surgeries. On the other hand, there are defenders of routine resection of this turbinate, whether it is affected by polypoid changes or not. Many studies have looked at the potential risks of resecting the middle turbinates such as iatrogenic frontal sinusitis, anosmia, or atrophic rhinitis but the more recent literature does not show such significant associations. A recent topic of debate is whether partial removal of the anterior and inferior portion of the middle turbinate affects nasal polyps recurrence or improves long-term outcomes by further facilitation of post-operative topical therapies. Some retrospective data has shown that its resection could prolong the time before the need for revision surgery and improve both endoscopic and olfaction scores. A few prospective studies have also been published but unfortunately none of these were randomized, thus introducing a significant selection bias. Thus, there is a need for a formal randomized, controlled trial to elucidate this question.
Summary 1. Purpose and Objective: The purpose of this study is to test the feasibility of rapid acquisition of point of care 3D ultrasound in obtaining abdominal and/or pelvic images. The study will use a newly developed acquisition method and post-processing technique to create three dimensional image models of the abdomen and/or pelvis. 2. Study activities and population group. The study population will be a convenience sample of patients of any age presenting to the Emergency Department with complaints necessitating a clinical abdominal and/or pelvic imaging. The study intervention includes acquisition of research ultrasound images, which will not be used for clinical care, and comparison of these images with clinically obtained images. Other clinical data such as surgical and pathology reports will also be reviewed. 3.Data analysis and risk/safety issues. This is a pilot study intended to determine feasibility and to refine image reconstruction algorithms. Research images will be compared to clinical images. Comparison of research images with final diagnosis will also occur. The research intervention, an ultrasound exam, has no known safety risks. The only risk to subjects is loss of confidentiality. This study is observational, not interventional, because the experimental ultrasound will be performed in all subjects and will not be used in the clinical care of patients (consequently, will not have the opportunity to affect clinical outcomes). Experimental images will be reviewed after completion of clinical care and will not be provided to the clinicians caring for the subjects. The investigators are not measuring the effect of the ultrasound examination on the subjects' outcomes.
This study is a randomized controlled trial to determine whether i-scan can improve the detection of conventional adenomas and sessile serrated adenomas/polyps.
A prospective outcomes study in patients referred for endoscopic mucosal resection of complex colon polyps.
While oral steroids have been shown to be effective in the management of patients with chronic rhinosinusitis with polyps, its role in treating chronic rhinosinusitis without polyps (CRSsNP) is ambiguous. Despite a lack of strong clinical evidence to suggest a benefit in this disease state, steroids are often prescribed as a component of post-operative care after sinus surgery for patients without polyps. Oral steroids carry with them significant adverse effects, and should be prescribed thoughtfully. The aims of this study are to determine if oral steroids in the peri-operative period improves patient outcomes in CRS without polyps.
The purpose of this study is to evaluate safety, tolerability, pharmacokinetics, and pharmacodynamics of PF-06817024 in healthy volunteers, in participants with chronic rhinosinusitis, with nasal polyps and in participants with moderate-to-severe Atopic Dermatitis
Background:The optimal technique for removal of diminutive or small colorectal polyps is debatable. Objective:To compare the complete resection rates of cold snare polypectomy (CSP) and hot snare polypectomy (HSP) for the removal of adenomatous polyps(3-9mm). Design：Prospective randomized controlled study. Setting：Three tertiary referral hospitals. Patients：we will recruit a total of 330 polyps(3-9mm). Interventions:Enrolled patients were randomly assigned to one of the two polypectomy protocols (CSP vs. HSP) using a computer-generated random sequence. If a patient had one or more polyps, all eligible polyps were removed using the initially assigned polypectomy protocol. After the initial polypectomy, additional EMR was performed at the polypectomy site to assess the presence of residual polyp tissue. Main Outcome Measurements:The primary study outcome was to compare the complete polyp resection rate between groups. Secondary outcomes included rate of postpolypectomy adverse events, including bleeding, perforations,infection and rate of tissue retrieval(Complete resection was defined as the absence of residual polyp tissue in the EMR sections of the polypectomy site).
Complete resection of neoplastic polyps is pivotal, as 8.8% to 50% of interval cancers may arise as a consequence of incomplete polypectomy. However, the ideal method to remove small colorectal polyps remains uncertain. The investigators designed a randomized controlled trial to assess whether injection-assisted cold snare polypectomy may be noninferior to EMR for the resection of small (6-10mm) colorectal polyps.
The development of a standardised imaging protocol to detect post endoscopic mucosal resection (EMR) recurrence or residual adenoma through the comparison of biopsies of the post EMR scar with endoscopic findings.
Colorectal cancer ist the 2nd most leading cancer among men and women in germany. Screening colonoscopy has the potential to detect premalignant lesions. By endoscopical resection of these lesions, colorectal cancers could be avoided. The decision for surveillance is made according to patients medical history, amount and histological characteristics of the resected polyps. Molecular guided decisions are still missing. Thus, further tools and mechanisms, beyond but in addition to endoscopy and histopathological, are strongly required to reduce such interval carcinomas and get a better and deeper inside into molecular alterations which occurs in premalignant lesions in the colon and describe risk populations which might benefit from shorter surveillance strategies by colonoscopy. Therefore GENESIS will enroll 100 patients, which underwent screening colonoscopy with polyp ectomy. All biopsies were stored and processed without formalin in special boxes (PaxGene by Qiagen®). After microdissection of polyp tissue and isolation of DNA targeted next generation sequencing of 38 cancer-related genes followed by bioinformatics and systems biology analyses. The sequencing results were correlated to the endoscopical and histopathological findings. In parallel we are collecting EDTA-blood samples for analysis of circulating cell-free DNA (cfDNA) to investigate the potential of liquid biopsies in premalignant colorectal lesions.