Influence of a microscopic positive proximal margin in the treatment of gastric adenocarcinoma of the cardia

Aim: To investigate the influence of a positive proximal margin in total gastrectomy patients with gastric adenocarcinoma of the cardia. Methods: Medical records of 191 patients with total gastrectomies for adenocarcinoma of the cardia between 1995 and 2000 were reviewed. The clinicopathologic features associated with a positive margin were determined, and the predictors for survival were analyzed. Results: The incidence of positive proximal margin was 8.4% (16/191). The positive margins were associated with advanced diseases. The tumor size and the depth of tumor invasion were independent risk factors for a positive margin. The mean survival in the positive margin group was 33.9 mo as compared with 62.4 mo in the negative group (P < 0.001). However, the difference in survival lost significance in subgroup analysis according to stage. Multivariate analysis identified that a positive margin was not an independent prognostic factor for survival. Conclusion: A positive margin is more of an indication of advanced disease in patients with gastric adenocarcinoma of the cardia rather than an independent prognostic factor for survival.