Active clinical trials for "Colorectal Neoplasms"

Based on our previous research, this study aims to determine reliable surgical stress response markers in patients undergoing radical resection of colorectal cancer.

RATIONALE: Gathering information over time from patients who have finished treatment for colorectal cancer may help doctors predict which cancer survivors will improve their physical activity and diet. PURPOSE: This clinical trial is studying health behaviors in patients who have finished treatment for stage I, stage II, or stage III colorectal cancer.

This observational study will assess the treatment duration, progression-free survival, reason for stopping treatment and patient and tumor characteristics of bevacizumab [Avastin] treatment in patients with metastatic colorectal cancer. Data will be collected for approximately 34 months. The target sample size is >300 patients.

RATIONALE: Gathering information about timely diagnosis in African American and Caucasian patients with newly diagnosed colorectal cancer may help doctors learn more about factors that influence a diagnosis and plan the best treatment. PURPOSE: This phase I trial is studying differences in timely cancer diagnosis in African American patients and in Caucasian patients with newly diagnosed colorectal cancer.

It has been reported that carbon dioxide (CO2) insufflation can reduce patient pain and abdominal discomfort during and after colonoscopy. Its safety and efficacy during colonoscopy even under sedation has been already assessed in some earlier trials. Air insufflation is still the standard method, however, because of a lack of suitable equipment and continued technical improvement in colonoscopy. In laparoscopic surgery, CO2 insufflation is widely applied and safely used with the patient under general anesthesia. CO2 insufflation is also applied for CT colonography for reduction of discomfort during or after procedure.2 During endoscopic procedure for colorectal neoplasia resection, however, long procedural time may increase not only the degree of discomfort during and after the procedure but also the risk of perforation. In addition to laparoscopic surgery, CO2 insufflation has also been applied to other endoscopic procedures. Saito et al reported the application of CO2 insufflation in Endoscopic submucosal dissection (ESD) of colorectal neoplasia in a prospective study in which their average procedural time using CO2 insufflation was 90 minutes under conscious sedation with average of 5.6 mg of midazolam. When compared with control group using room air, statistically negligible difference of pCO2 was observed with significant difference in abdominal discomfort.6 Screening colonoscopy, which can be completed within 15 minutes if no lesion being detected, requires high screenee satisfaction so as to improve patient compliance. In the setting of colonoscopy after positive FOBT, the attendance rate for secondary colonoscopy was around 60 to 70 % according to the data demonstrated in previous RCT and population-based studies. With application of CO2 insufflation, further improvement of patient compliance can be anticipated. This study aims to investigate whether use of CO2 insufflations can reduce examinee discomfort in comparison with air.

RATIONALE: Diagnostic procedures, such as lymph node mapping during surgery and sentinel lymph node biopsy, may help doctors find micrometastases and predict cancer recurrence. PURPOSE: This phase II trial is studying how well lymph node mapping during surgery together with sentinel lymph node analysis and blood testing work in detecting and predicting early micrometastases in patients with colorectal cancer.

The purpose of the study is to evaluate efficacy (i.e. reaching the cecum) and safety of the Invendo C20 Colonoscopy System

The purpose of this study is to learn more about individual's with a family history of colon cancer and the process by which they may decide to undergo or not undergo prophylactic colectomy. This is a surgery to remove the colon in order to reduce risk of cancer (or of getting cancer again).

The purpose of this study is to identify an early indicator of drug efficacy in patients with advanced colorectal cancer - a prospective evaluation of circulating tumor cells, positron-emission tomography scan and RECIST criteria.

To describe treatment reality of patients with colorectal cancer treated by office-based and clinic-based medical oncologists in Germany.