Active clinical trials for "Neoplasms"

Study on the Carcinogenesis of SOX-9 in Oral Cancer, and Chemopreventive Possibility for the Treatment of Oral Cancer Using SOX-9 Inhibitor.

Surgery for malignant pleural mesothelioma is complex and prolonged, and may involve significant blood loss with considerable blood and product transfusion. Thromboelastography (TEG) is a global assay of coagulation that uses whole blood to produce a tracing that records kinetic changes in clot formation. This study aims provide a better understanding of the coagulation profile of these patients, and will form the basis of a TEG-based transfusion algorithm for future surgeries for mesothelioma.

To assess the predictive value of circulating tumor cells (CTCs) for recurrence of advanced gastric cancer after radical resection. To identify the relationship between the detection of circulation tumor cells and recurrence patterns of gastric cancer after radical resection.

Electrid activity of the basal ganglia will be recorded with an implantable deep brain stimulation device (supplied by Medtronic Inc). Study hypothesis is that these activities differ according to what the patient does, i.e. are different during gait and speech.

The purpose of this study is to learn more about the appearance and behavior of benign-looking adnexal masses. Benign-looking means that when viewed here by ultrasound it has the appearance of looking not harmful or not malignant. Adnexal refers to the 'adnexa', the space in the female pelvis on either side of the uterus (or where the uterus used to be if you previously had a hysterectomy). The adnexa includes, but is not limited to, the ovaries and the fallopian tubes. Masses refers to a variety of structures, including but not limited to: ovarian cysts that are fluid filled sacs within or attached to an ovary ovarian tumors that can be solid tissue or a combination of cysts and solid tissue hydrosalpinges that are fluid collections in the fallopian tube Many women have what appear to be benign adnexal masses. Many times, removal of the masses with surgery is not necessary. Often surgery is performed unnecessarily, for fear that these masses could be cancer. There is not much information available for doctors to know how and when to follow these masses, or which ones will become cancer. This study will combine information from centers all around the world regarding the behavior of all types of benign adnexal masses. The aim of this study is to develop decision tools for doctors to know the best way to treat these masses in order to improve the detection of ovarian cancer while at the same time reduce the number of unnecessary operations.

The purpose of this study is to determine whether the perfusion parameters in the normal pancreas and the pancreas cancer (adenocarcinoma or neuroendocrine tumor) are different on perfusion CT to determine whether initial perfusion parameters as well as perfusion parameter change in pancreas adenocarcinoma before and after chemotherapy are different between chemotherapy response group (CR, PR according to RECIST 1.1) and non response group (SD, PD according to RECIST 1.1).

Benign adenomas of the colon have the potential to degenerate and become malignant. Therefore adenomatous polyps should be detected and resected during colonoscopy. Factors like advanced age and male gender are associated with the detection of adenomas. The same epidemiological pattern can be found with regard to colon diverticula. Furthermore, western world countries report higher incidences of both colorectal carcinoma as well as diverticular disease. It is not known whether a correlation exists between both entities. Some recent data have postulated higher adenoma detection rates in patients with concomitant diverticular disease (Rondagh EJ et al. Eur J Gastroenterol Hepatol. 2011; 23:1050-5. Kieff BJ et al. Am J Gastroenterol 2004; 99: 2007-11). If a positive correlation could be found this would possibly affect recommendations regarding colonoscopy surveillance intervals for patients with and without diverticular disease. The investigators therefore plan to conduct the following trial.

This will be a retrospective chart review of 880-1000 patients who had a colonoscopy and were found to have a tubular adenoma between the years of 2004-2008. We will compare the rate and timing of completion of repeat colonoscopies pre and post establishment of a polyp registry (tracking system) in 2006. Each group will be composed of up to 500 subjects consecutively identified from all the patients who underwent colonoscopy and were found to have a tubular adenoma (Group 1-2004 to 2006, Group 2 2007-2008).

The purpose of this study is to determine whether whole-body MRI (WB-MRI) accuracy is superior to FDG-PET-CT considered as the gold-standard for the staging of distant lesions of rectal cancer.

An adnexal mass is the most common indication for gynaecological surgery . Pre operative characterization is crucial and a scoring system would be useful to standardize the imaging report and thus, improve patient management. Recently, our center developed the first MR scoring system named ADNEXMR SCORING system in a retrospective study which is accurate and reproducible (1). Our objectives are to perform an external prospective validation of this scoring system, to evaluate its potential impact on therapeutic strategy and to test its reproducibility. This is a prospective large multicenter study. All patients with a sonographically indeterminate adnexal mass referred for MR imaging will be consecutively included in each center. Then, patients will undergo a routine pelvic MR imaging. Prospectively, one senior and one junior radiologists independently analyze the different MR criteria to characterize adnexal masses. The MR report will be issued as standard and the patient will be managed accordingly. Then, the reader will classify the mass using ADNEXMR SCORING system. The classification will be compared to the reference standard as defined below. The reproducibility of the classification will be tested between the junior and the senior radiologist. After anonymisation, images will be analyzed by another senior radiologist of another center blinded from any clinical or ultrasonographical data and correlated with the reference standard. Reference standard: Reference standard will be surgical procedure with histology or standard clinical follow-up depending on most appropriate routine practice. Sample size: The sample size was computed to ensure a power of at least 90% (with a two-sided type I error rate of 5%) to conclude that SCORE 2 and 3 and SCORE 4 and 5 would have a different PPV. It would thus be necessary to have at least 569 patients classified as SCORE 2, 259 as SCORE 3, 52 as SCORE 4 and 51 as SCORE 5 (18). Given the prevalences, and assuming 6% of patients would be classified, as SCORE 1 and 10% would be lost to follow-up, 1340 patients will be included in this study to insure a probability of at least 95% to obtain the aforementioned number of patients in each score category. The inclusion period will last 18 months (extension for a period of 12 months) and monitoring will continue for 2 years. Thomassin Naggara I., et al. Development and preliminary validation of an MRI Scoring system for Adnexal Masses. Radiology 2013, May;267(2):432-43.