Objective To study the relationship between early gastric cancer and MiB-1 expression. Methods Resected early gastric cancer from 99 cases were studied by immunohistochemical method. Results MiB-1 proliferation index (MiB-1 PI) was related to patient ’s age, tumor size, location and depth of invasion. MiB-1 PI was higher in differentiated adenocarcinomas than in undifferentiated adenocarcinomas(P＜0.01). Cancers with lymphatic vessel invasion or lymph node metastasis had higher MiB-1 PI (P＜0.05). The postoperative survival was related to MiB-1 proliferation grade (MiB-1 PG), being higher in MiB-1 PG 1,2 grade than that in MiB-1 PG 3,4 grade. Conclusion Even in the early stage of gastric cancer, tumor proliferation activity was related to patients’ prognosis.
ObjectiveTo investigate the relationship between clinicopathological characteristics and invasion depth of early gastric cancer (EGC), in order to put forward suitable regimens for EGC with different clinicopathological characteristics. MethodsThe clinicopathological data of 18 patients with EGC diagnosed from January 2008 to January 2013 were retrospectively analyzed. Clinicopathologic variables such as age, gender, tumor size and location, Helicobacter pylori infection, melaena, macroscopic type, and histopathological type were investigated by using chi-square test for their possible relationship with the depth of invasion. ResultsLymph node metastasis was more common in patients with submucous cancer (3/9, 33.3%) than in those with mucous cancer (0/9, 0%). Submucosal invasion was found in 77.8% (7/9) of undifferentiated adenocarcinoma cases, whereas only 22.2% (2/9) of differentiated adenocarcinoma had submucosal invasion. TypeⅢ EGC had a significant association with submucosal invasion (P<0.05). ConclusionEndoscopic treatment is unsuitable for patients with Type Ⅲ EGC.
ObjectiveTo summary the standard treatment for early gastric cancer. MethodsThe current early gastric cancer treatment guidelines around the world were analyzed and the standardized treatment patterns for early gastric cancer were concluded. ResultsThe accurate preoperative evaluation for early gastric cancer is the basis of standardized treatment which can be divided into staging evaluation and histological evaluation.The staging evaluation is focused on the gastric wall invasion and lymph node involvement of the tumor while the histologic evaluation emphasize the histological type and grading of the tumor.According to the precise evaluation for early gastric cancer, endoscopic surgery, laparoscopic surgery, open surgery, and multimodal therapy can be applied individually to the patients.Different treatment methods have their indications, but the indications of the therapies in different guidelines are suggested with slight differences. ConclusionIn clinical practice, the choice of treatment should be made with comprehensive consideration of diagnosis and individual characteristics of patients to achieve the most benefit on prognosis.
ObjectiveTo explore the feasibility and clinical efficacy of laparoscopic sentinel lymph node biopsy combined with endoscopic submucosal dissection(ESD) for patients with early gastric cancer(EGC). MethodsThe clinical data of 26 cases who received ESD combined with laparoscopic sentinel lymph node biopsy for EGC between March 2009 to August 2013 in Affiliated Hospital of Jiangnan University were analyzed retrospectively. These patients first underwent laparoscopic sentinel lymph node(SLN) biopsy. If frozen sectioning examination suggested there was lymph node metastasis, laparoscopic D2 radical gastrectomy would be operated. However, the ESD would be operated if the frozen sectioning examination was negative. ResultsThe total numbers of SLN were 95, and mean numbers of SLN were 3.7±1.4(range from 1 to 6). Two patients with positive SLN underwent laparoscopic-assisted distal gastrectomy and 24 patients with negative SLN underwent ESD. The disease free survival(DFS) and local recurrence rate after ESD for EGC was 91.7%(22/24) and 4.2%(1/24), respectively. And the total DFS for all patients was 96.2% (25/26). ConclusionESD for EGC is a safe and feasible procedure, combined with laparoscopic sentinel lymph node biopsy conforms more to the concept of principle of radical operation.