Clinicopathological Features and Prognostic Factors for Patients with Clinical T4 Gastric Cancer that Underwent Combined Resection of Invaded Organs

PURPOSE: The surgical treatment of gastric cancer that invades adjacent organs is a radical gastrectomy with combined resection including the adjacent organs or a palliative operation by performing either a gastrojejunostomy or gastrectomy. However, since it is impossible to determine the exact stage of the cancer, either T or N, in the case of palliative surgery, it is inappropriate to predict patient prognosis. This study analyzes the prognoses for patients whose final TNM stages are determined by a combined resection performed due to macroscopical infiltration into the adjacent organs. MATERIALS AND METHODS: Of 2,452 patients that underwent surgery for gastric cancer at our hospital from 1983 to 2002, we evaluated 102 patients where a combined resection was performed because direct infiltration into the adjacent organs was discovered. RESULTS: Univariate analysis showed that the survival rate differed by the depth of invasion into the gastric walls, the degree of lymph node metastasis, distant metastasis, pathological TNM stage, surgical curability, the location of tumor, and histological differentiation. By multivariate analysis, it was found that the surgical curability, the location of the tumor and the degree of lymph node metastasis were independent prognostic factors. CONCLUSION: It is suggested that even when infiltration into adjacent organs is suspected, radical surgery should be performed as to allow a prediction of prognosis through an exact determination of disease stage, and to improve the survival rate.

A Comparative Study of Pancreaticoduodenectomy for Benign and Malignant Disease

PURPOSE: The mortality and morbidity rate after pancreaticoduodenectomy (PD) is still high, although the operative techniques and skills and the perioperative care has been improved. The incidence of PD for benign disease is 5~20%. The aim of this study is to determine the factors that differentiate between the benign group and the malignant group by comparing the clinical manifestations, and we studied the safety of performing PD for benign diseases by observing the early and late postoperative complications. METHODS: We retrospectively studied 124 patients who had been diagnosed with benign or malignant pancreatic diseases and who underwent PD between April 1995 and December 2005. We divided the patients into two groups, i.e., the benign group (20) and the malignant group (104), to compare their clinical characteristics and postoperative outcomes. Result: Chronic pancreatitis was the most common disease (35%) in the benign group and distal CBD cancer was the most common disease (40.4%) in the malignant group. Jaundice, weight loss, and elevation of CA 19-9 were more frequent in the malignant group than in the benign group (p<0.05). There were no statistical differences in the mortality rate (10.0% vs 6.7%), reoperation rate (5.0% vs 4.8%), hospital stays (27.1 days vs 24.0 days), early complications (30.0% vs 44.6%) and late complications (22.2% vs 26.4%) between the two groups. There were no mortality and newly developed malignancy during 33.4 months of follow-up period in benign group. CONCLUSION: On the preoperative evaluation, jaundice, weight loss, and elevation of CA 19-9 were more frequent in the malignant group. The postoperative early and late complications showed no difference between the two groups and complication rate was generally favorable. Thus, PD can be performed safely for benign diseases that cannot be treated in a conservative fashion and also for other clinically suspicious malignant diseases.