Active clinical trials for "Colonic Neoplasms"

Approximately 20-30 % of colon cancer patients who have no metastasis in lymph nodes after definitive colectomy have recurrence with distant metastasis. These recurrences could be due to missed occult tumor cells or micrometastasis. Detailed examination of all lymph nodes is expensive and time consuming. Sentinel lymph node mapping using Indocyanine green dye helps in identifying the lymph nodes which are most likely to harbour metastasis. These sentinel lymph nodes can be subsequently subjected to detailed pathologic examination and immunohistochemistry which increases the likelihood of identifying micrometastasis and occult tumor cells. Patients found to harbour such metastasis can be treated with additional chemotherapy after surgery. The aim of the study is to examine the feasibility of sentinel lymph node mapping using Indocyanine green dye in colon cancer and evaluate the upstaging rate in post-operative colon cancer patients who don't have metastatic lymph nodes on routine histopathology.

Many patients suffer from chronic diarrhoea after surgical treatment for cancer in the right side of the colon. The investigators' main hypothesis is that colon cancer patients with chronic diarrhoea have a higher risk of bile acid malabsorption compared with colon cancer patients without diarrhoea. The investigators also expect that a part of the cases of bile acid malabsorption is caused by underlying bacterial overgrowth in the small bowel. The investigators assume that patients with severe bile acid malabsorption have a lower value of FGF19 in the blood compared to patients with moderate or none bile acid malabsorption. Furthermore, it is assumed that patients with chronic diarrhoea and documented bile acid malabsorption after surgical treatment for right-sided colon cancer will get improved bowel function when treated with a bile acid binder, or antibiotics in case of bacterial overgrowth.

The primary endpoint is to evaluate the TFS (time to failure of strategy).

The purpose of this prospective clinical study is to establish the feasibility and usability of the ENDORINGS™ when used during standard colonoscopy procedure.

This randomized controlled pilot study at the Health Annex, Family Practice & Counseling Network (FPCN), a community clinic in Southwest Philadelphia, aimed at providing data on the feasibility of a mailed FIT approach to CRC screening in a community health setting, and how patients respond to text messaging and behavioral economic engagement incentives.

To standardize the surgery for advanced right hemi colon cancer with laparoscopy and investigate whether extended lymphadenectomy (CME) could improve disease-free survival in patients with right colon cancer, compared with D3 radical operation in laparoscopic colectomy.

This pilot study is a 2-armed randomized controlled trial assessing the impact of a multimodal approach on colorectal cancer screening participation rates in a Federally Qualified Health Center. The trial will test serial text message reminders and opt-out mailed fecal immunochemistry test (FIT) home kits against a simple reminder text message control. Patients aged 50-74 years, who are registered at a Family Practice and Counselling Network (FPCN) clinic and are overdue for colorectal cancer screening will be recruited. The primary outcome is the rate of FIT kits being returned at 12 weeks.

Serrated polyposis syndrome (SPS) is the most common colorectal polyposis syndrome and is characterized by the combination of large and/or numerous serrated lesions (SLs) throughout the colorectum. SLs are classified into sessile serrated polyps (SSP) with or without dysplasia, hyperplastic polyps (HP) and traditional serrated adenomas (TSA). In 2010 the World Health Organization (WHO) defined this syndrome by any one of the following conditions: criterion I, at least 5 SLs proximal to the sigmoid colon with 2 or more of these being >10mm in size; criterion II, any SLs proximal to the sigmoid colon in a first-degree relative with SPS; criterion III, more than 20 SLs of any size distributed throughout the colon. It has been demonstrated that 11.8-28.5% of patients with SPS present with colorectal cancer (CRC) at diagnosis. Tandem colonoscopy studies have demonstrated that a significant number of lesions are missed during conventional colonoscopy. This finding is even more evident when focusing SLs where a 31% miss rate has been reported. SLs are often overlooked due to their typical appearance: flat morphology, similar colour to the surrounding mucosa, subtle and indistinctive borders. Chromoendoscopy (dye spraying onto the surface of the colon) enhances the detection of subtle and flat polyps in the colon. Until the date no studies have assessed the use of dye-based chromoendoscopy in SPS patients. The aim of this trial was to evaluate the usefulness of panchromoendoscopy with indigo carmine for the detection of polyps in the colon in patients with SPS. Secondary aims were to estimate the SLs and adenoma miss rates in these patients. Patients were randomized in a 1:1 distribution to one of the two arms of the study by a list of random numbers distributed by the coordinator center. After randomization, patients were submitted to tandem colonoscopies by the same endoscopist: In group A (HR-WLE) the first inspection was on high-resolution white-light endoscopy from the cecum/ileo-colonic anastomosis to the rectum, followed by a second inspection also on HR-WLE. In group B (HR-CE) the first inspection was on HR-WLE from the cecum/ileo-colonic anastomosis to the rectum, followed by a second inspection with panchromoendoscopy. For this, the lumen was sprayed in a segmental fashion using 0.4% indigo carmine delivered via a specially designed dye spray catheter (Olympus PW-5V1) or via the accessory channel with a 50cc syringe filled with indigo carmine and air. After allowing a few seconds for the dye to settle onto the mucosal surface, excess pools of indigo carmine were suctioned and the mucosa was then scrutinised. Time to withdrawal from the cecum was measured using a stopwatch excluding time needed for polypectomy and biopsies. Lesions detected during each inspection were described and then removed. Size (measured in comparison with an open biopsy forceps), morphology (using the Paris classification), location and polypectomy technique were recorded before removal. Histology was used as gold standard.

The main purpose of this study is to investigate whether magnetic ressonance imaging (MRI) can be used in treatment planning with assessment of diagnostic accuracy. With the inclusion of 150 patients the study will investigate whether MRI is useful and better than CT scanning in patients with colon tumors. And also if MRI is useful after neoadjuvant treatment.

This project aims to evaluate different approaches to increase colorectal cancer screening among primary care patients at Penn Medicine through a centralized screening outreach program. In a pragmatic trial, we will evaluate different approaches to increase response rate to mailed fecal immunochemical test (FIT) kits among eligible patients, including differentiated packaging, sending text reminders, and personalized reminders.