Active clinical trials for "Stomach Neoplasms"

This study is designed to evaluate the potential clinical utility of ctDNA in the field of gastric cancer treatment,especially the usage of an indicator of MRD(minimal residual disease) in post radical gastrectomy patients. The primary purpose of this trial is to demonstrate if the postoperative ctDNA analysis could be used as an indicator of MRD or adjuvant chemotherapy response in advanced gastric cancer after radical gastrectomy.The second purpose is to describe the profile of ctDNA in gastric cancer.

Prospective observational study comparing the use of circular (Orvil) and linear stapler for intracorporeal esophagojejunostomy. Patients with adenocaricinoma involving the esophagogastric junction or the gastric cardia are observed. The two methods of esophagojejunostomy are compared.

Gastric cancer is still one of the main health care issue and gastrectomy with lymph node dissection is the only chance to be cure. Even though the development and standardization of gastric cancer surgery, the morbidity of gastric cancer surgery was reported around 20% with less than 1% of mortality in East. In contrast, around 40% of morbidity and 10% of mortality was reported in West. There has been several indexes which can define the complications after surgery, but adapting it into clinical practice is sometimes difficult due to the heterogeneous opinion between surgeons. Thus for clear defining the complications after surgery, consensus between many surgeons and prospective cohort study is necessary. The purpose of this study is collecting the complications data after gastric cancer surgery and defining it with every week meeting by at least 6 or more surgeons' discussion.

Descriptive registry to investigate frequency of HER-2 positive gastric cancer involving CNS. Exploration of additional prognostic factors for brain involvement from gastric cancer.

The accurate prediction of depth of tumor invasion in early gastric cancer is essential for the proper selection of candidates for endoscopic resection. Conventional endoscopy and endoscopic ultrasonography have been useful diagnostic method for depth of invasion in early gastric cancer. However, there has been no prospective comparative study on the accuracy between the 2 methods. Therefore, the investigators prospectively compare the accuracy between the 2 methods regarding prediction of depth of invasion.

The investigators hypothesize that aberrant hypermethylation of tumour suppressor genes is an important mechanism for Epstein-Barr Virus (EBV) - related gastric carcinogenesis, the promoter hypermethylation status and the expression of S100A2 and TFF1 might be different between EBV-associated gastric cancer (GC) and non EBV-associated GC.

Gastric cancer is one of the most common cancers in Korea. Having achieved excellent long-term survival for early gastric cancer patients, there is a growing interest in improving the quality of life of these patients without compromising their prognosis. Laparoscopic surgery for early gastric cancer have been found to be safe and feasible with superior short-term outcomes. Although laparoscopic gastrectomy with D2 lymphadenectomy is being performed for patients with locally advanced gastric cancer; the completeness of the D2 lymphadenectomy during laparoscopic surgery has not been evaluate and no standardized procedure exists. To conduct a clinical trial comparing laparoscopic D2 lymphadenectomy to the open approach, quality control of D2 lymphadenectomy procedure is necessary.

The purpose of this study is to evaluate the presence of proteins in solid tumors which may lead to an immune response

Subepithelial lesions (SEL) are incidentally observed in the stomach of about 0.3% of middle-aged men and women; half of these are neoplastic. The incidence of subepithelial tumors (SET) of gastrointestinal (GI) origin has risen twofold to fivefold within the past 30 years.The etiology of most SMTs cannot easily be determined by endoscopy. So, we aim to estimate the prevalence and types of sub-epithelial lesions among patients undergoing EGDs in Egypt.

A prospective study of the results of laparoscopic approach of gastric carcinoma in western patients is designed. The working hypothesis proposes obtaining similar results to those obtained in the series reported by eastern hospitals (Japan and Korea) and, at least, equivalent to those recorded in conventional surgery.