Active clinical trials for "Adenoma"

A randomised back to back study comparing cap and Endocuff to detect adenomas during colonoscopy

A withdrawal time of at least 6 minutes has been considered to be necessary to guarantee the adenoma detection rate and the critical quality criterion of colonoscopy. However, several large observational investigations demonstrated that 9 minutes will be in favor of higher adenoma detection rate and lower risk of interval colorectal cancer, when compared with 6-minute withdrawal. Meanwhile, a few studies also indicated that no significant benefit were observed in longer withdrawal time. Up to now, no randomized controlled trials have been conducted to give a definitive conclusion. Therefore, we performed a multicenter, prospective, randomized Controlled trial to compare adenoma detection rate of 6-minute and 9-minute withdrawal in colonoscopy.

This clinical trial is being conducted to assess whether second forward view examination of proximal colon could increase adenoma detection rate of right colon.

The diagnosis of rectal lesions is a challenging task, and the accuracy of the primary staging is important preoperatively. A relatively novel technology makes it possible to measure the tissue stiffness during endorectal ultrasonography. The purpose of this study is to evaluate the diagnostic value of Shear Wave Elastography (SWE). The hypothesis is that the tissue stiffness is higher in malignant tissue than in benign lesions.

This study is intended to demonstrate the superiority of colorectal polyp detection using computer-assisted colonoscopy compared to conventional colonoscopy.

The CELTiC panel is a potential blood-based test for detecting colorectal cancer (CRC) and precursors of CRC. This can be useful for CRC screening, since this requires tests that detect cancer in an early stage to maximize the chances of successful treatment. CELTiC combines four markers that can be detected in blood. These markers are composed of so-called messenger RNA (mRNA) and can be viewed as the instructions of our genes to the cell to make certain proteins. Cancer is the result of mutation in these genes. Thus, the mRNA in cancer patients is, depending on the type of mRNA, often abnormal. In earlier studies, the developers of CELTiC found four mRNA's that are different in patients with CRC compared to healthy individuals. However, CELTiC has not yet been extensively studied in individuals for whom the test is intended: a population undergoing CRC screening. The current study aims to fill this gap. We will assess the ability of CELTiC to detect CRC and precursors of CRC in a population of individuals between 50 and 75 years old in the Netherlands and Italy. This population has already been preselected by having a positive fecal immunochemical test (FIT), a test that is frequently used in CRC screening. This population will undergo a colonoscopy, a procedure where a doctor enters the large bowel through the anus using a flexible camara to assess whether the patient has cancer. Prior to this colonoscopy, we will collect blood samples from the individuals to assess their CELTiC score. After the colonoscopy and the blood analysis, we can assess whether the test adequately detects CRC and precursors of CRC in this population.

The study is intended to compare the detection rate obtained by performing G-EYE® high definition colonoscopy vs. the detection rate obtained by performing ECV high definition colonoscopy.

The goal of this clinical trial is to evaluate the diagnostic yield of CADe in a consecutive population undergoing colonoscopy. The main question it aims to answer is the Adenoma Detection Rate (ADR). Participants undergoing colonoscopy will be randomized in a 1:1 ratio to either receive Computer-Aided Detection (CADe) colonoscopy or a conventional colonoscopy (CC). Researchers will compare the CADe group and the CC-group to see if CAD-e can increase the ADR significantly.

The purpose of this study is to compare the performance of a new prototype colonoscope with a standard colonoscope used world-wide today. The prototype colonoscope is more flaccid with a smaller diameter than the standard colonoscope. The hypothesis to be tested is that the prototype will improve negotiation of sharp bends and inflict less discomfort or pain to the patient. Both colonoscopes are manufactured by the same company.

Water exchange method has been shown to reduce medication requirement and pain experienced during colonoscopy. It may increase the adenoma detection rate (ADR). Water exchange provides salvage cleansing and the refractive index of water (n equals about 1.3) is larger than that of air, which creates optical distortion that likely contributes to objects appearing larger underwater, making smaller lesions easier to visualize and it may help draw attention to those smaller lesions during withdraw. These principles facilitate to the higher adenoma detection rate. There is a large number of literature on the adenoma detection rate during water exchange colonoscopy, but most studies have been conducted in only one centre, simple-size, and under sedation patients, the influence of adenoma detection rate under unsedation patients was unclear. The aim of this study is to compare the ADR of colonoscopy by using the water exchange method versus the conventional air method in unsedation patients in multiple centers in China.