View clinical trials related to Polyps.
Filter by: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.
Cold snare polypectomy (CSP) is now common practice and has proven to be a safe and effective technique for removal of diminutive polyps. Both thick and thin wire snares are now commonly used for CSP. However, because of their physical characteristics, thick wire snares might leave a higher percentage of residual adenoma at the resection site. Since this may result in a higher risk of recurrence, the technique needs to be optimized. Experts have suggested that a thin wire snare might be more efficient, with a lower risk of residual adenoma at the resection site and consequently a lower risk of recurrence and interval cancer.
The Department of Otolaryngology at Mount Sinai is looking for adults with sinus disease with polyps, otherwise called chronic rhinosinusitis with nasal polyps (CRSwNP). Patients may be eligible to enroll in a study offering a cutting-edge therapy to help reduce symptoms and avoid surgery. The treatment combines an antibiotic (doxycycline) with oral steroids. Oral steroids are the mainstay of medical management for patients with CRSwNP. However, recent studies have shown that doxycycline helps improve symptoms as well by reducing inflammation and killing common bacteria that can cause symptoms. This study is the first to evaluate this combination regimen.
The purpose of this study is to compare the adenoma detection rate (ADR) of the G-EYE™ colonoscopy with that of standard colonoscopy.
The purpose of this study is to evaluate the performance of the SEPT9 gene methylation assay in Colorectal cancer (CRC) high-risk population in Chinese hospitals using the opportunistic screening method. The trial plans to evaluate a Chinese domestic SEPT9 assay kit produced by BioChain (Beijing) Science and Technology Corporation, who is a close partner of Epigenomics AG, the producer for Epi proColon 2.0 CE.
Chronic sinusitis is one of the most common chronic diseases in North America, with over 5% of the Canadian population affected by the disease. Until now, treatment with surgery has been performed only in the operating room. Recently a smaller surgical procedure that is done in the clinic for some patients with chronic sinusitis with polyps has been found to result in symptom control that appears to be similar to that which occurs with sinus surgery. Performing the smaller clinical procedure has advantages including a shorter recovery time for the patient, a much lower cost to the health care system for the procedure, and a shorter patient wait time for the procedure to be done in comparison to sinus surgery performed in the operating room. To know with greater certainty that the procedure performed in the clinic is as good as the operating room sinus surgery, a large multiple investigator randomised clinical trial has been designed. However, before carrying out that trial, a practice run or internal pilot study of that trial is required to ensure that the trial can recruit patients at the rate that is anticipated and that the procedures to obtain the measurements being used for the larger study are adequate.
Early cancers of the rectum can be removed safely through the anus without subjecting patients to major abdominal surgery in a procedure called TEMS (transanal endoscopic microsurgery). Patients undergoing TEMS can benefit from reduced mortality, impotence, hospital stay and avoiding a stoma that may be associated with pelvic surgery. Currently few of the patients eligible for TEMS are offered it for a variety of reasons that include uncertainties about the risk of leaving residual tumour and the increased risk of subsequent recurrence of cancer within the pelvis. Current UK guidelines state there is no role for imaging in assessing the malignant polyp. Conversely whilst retrospectively reviewing their MRI databank the investigators have found evidence that MRI can accurately judge the depth of these early tumours and thereby potentially identify patients for local excision. The investigators hope to prospectively test their hypothesis that an MRI scan can accurately gauge depth of tumour spread in an unselected group of benign and malignant tumours measuring between 20mm and 50mm in size. The investigators will identify eligible patients awaiting surgery / polypectomy and if they consent to this pilot study participants will undergo an MRI to assess their tumour which assesses safety at all levels of the rectal wall. The accuracy of MRI can then be established by reference to gold standard histopathology. Should MRI prove sensitive and specific then the investigators hope to change national guidelines to mandate MRI to standardise assessment and thereby increase the appropriate use of TEMS in the UK.
The study evaluates whether the use of a novel endoscopic cap (the endo-cuff) at the tip of a colonoscope improves the numbers of polyps detected during bowel cancer screening colonoscopy. Half the patients will have standard colonoscopy and half will have colonoscopy with the cap attached.