Active clinical trials for "Colonic Neoplasms"

This prospective observational study will evaluate the safety and efficacy of first-line Avastin (bevacizumab) in combination with standard chemotherapy in routine clinical practice in patients with metastatic cancer of the colon and/or rectum. Patients will be followed for the duration of their treatment and a 30-day follow-up after the last dose of study drug.

The investigators will attempt to improve the patient experience before colonoscopy. The investigators will provide an in-office ipad video series and an electronic web guide to help patients learn all the best ways to prepare for colonoscopy. The investigators will then follow the patients who receive this eGuide to colonoscopy and observe whether or not they enjoyed the additional access to information from their providers, and will monitor whether or not they were better prepared for their colonoscopy.

The investigators propose a screening population-based study to systematically evaluate the accuracy and clinical relevance of sDNA testing as a potential alternative to colonoscopy screening. In addition, the investigators propose a genetic epidemiologic study of the relation between colon polyps, an established precursor of colon cancer, and two factors that may influence risk for colon cancer: candidate genes and diet.

Recent studies have shown that survival after a colorectal cancer diagnosis may be affected by a person's activity level and body size. This research says that for colorectal cancer patients, the less active and more obese they are, the more likely they are to have a cancer recurrence or die from their cancer. Chemotherapy has been shown to reduce activity levels, fitness, and body size in some cancer patients. However, it is not known how chemotherapy specific for colon cancer patients affects their activity levels, fitness, and body size. The main goal of our study will be to look at how chemotherapy treatments affect the fitness, activity levels, and body size in colon cancer patients. In order to do this, we will measure these variables before chemotherapy treatments, and at 1 and 6 months following the end of treatment. Our results will show how chemotherapy affects fitness, activity levels, and body size in colon cancer patients and provide data to help in designing an exercise intervention specifically for colon cancer survivors.

The purpose of this study is to see whether magnetic resonance (MR) techniques can detect changes caused by chemotherapy in the livers of patients who have been treated for colorectal cancer. Some patients who undergo chemotherapy for colorectal cancer may experience side-effects in their livers. These side effects may influence further treatment options. If this study finds that MR techniques detect changes in the liver due to chemotherapy, then MR methods may eventually be used to help patients and physicians plan further treatment.

RATIONALE: Gathering medical and family history information from patients and family members may help doctors better understand hereditary colorectal cancer and hereditary polyposis syndrome and identify patients at high risk of developing hereditary colorectal cancer. PURPOSE: This research study is collecting information from patients and family members with hereditary colorectal cancer or polyposis syndrome or who are at high risk of developing hereditary colorectal cancer.

Transversus abdominis plane block (TAP block) is a new regional block for abdominal wall.It had been reported the effect of post-operative pain control in minor abdominal surgery, such as inguinal hernia repair and appendectomy. On the other hand, because of the accurate of the pre-operative images, the minimal laparotomy for colon cancer was accomplished. Thus, the purpose of this study is to investigate the effect, such as analgesic effect, hemodynamic stability, and post-operative morphine consumption, of TAP block in minimal laparotomy.

Our objective is to monitor glomerular filtration rate (GFR)during the perioperative phase of patients undergoing robotic surgery for rectum or large bowel cancers. We will use both a single injection and a continuous infusion of iohexol to measure kidney function for 72 hours after surgery.

This study aims to investigate levels of circulating cell free DNA (cfDNA), circulating tumor DNA (ctDNA), circulating tumor cells (CTC) and immunological changes after self-expanding metal stent (SEMS) placement for malignant obstruction in the colon, and interpret these levels in relation to overall- and disease-free survival. Furthermore, we intend to study the opportunity to identify patients with a higher risk of recurrence due to the SEMS placement by monitoring cfDNA and ctDNA-levels, as it may be a potential biomarker to initiate or optimize chemotherapy and thereby ensure a better prognosis for the patients.

Small growths detected in the colon (polyps) during a colonoscopy may or may not have the potential to develop into cancer. However, since visual inspection alone cannot separate all potentially harmful polyps from harmless ones, the standard approach is to remove them all for histological lab examination, exposing patients to risk of injury and putting a significant demand on hospital resources. An accurate method of determining polyp type during endoscopy would enable the clinician to only remove potentially harmful polyps. A new endoscopic optical imaging probe (OPTIC), which analyses how light interacts with tissue, is proposed to do this. The probe is contained within a normal endoscope and uses white light and blue/violet laser light to illuminate the tissue. The reflected and fluorescent light emitted, along with normal colour pictures of the polyp surface, are measured and recorded to quantify specific characteristics of each type. Optical measurements of polyps detected in endoscopy clinics at Imperial College Healthcare NHS Trust will be analysed to determine if the signal can be used to differentiate different polyp types.