Endoscopic Resection for Synchronous Esophageal Squamous Cell Carcinoma and Gastric Adenocarcinoma in Early Stage Is a Possible Alternative to Surgery

Background/Aims: We investigated the clinical outcomes according to the method of treatment in synchronous esophageal and gastric cancer. Methods: Synchronous esophageal squamous cell carcinoma and gastric adenocarcinoma were diagnosed in 79 patients between 1996 and 2010. We divided the patients into four groups according to treatment; Group 1 received surgical resection for both cancers or surgery for gastric cancer with chemoradiotherapy for esophageal cancer (n=27); Group 2 was treated by endoscopic resection with or without additional treatment (n=14); Group 3 received chemoradiotherapy only (n=18); and Group 4 received supportive care only (n=20). Results: The median survival times in groups 1 and 2 were 86 and 60 months, respectively. The recurrence rate and mortality were 23%. and 48%, respectively, in group 1 and 21% and 4%, respectively, in group 2. The median survival time was 12 months in group 3 and 9 months in group 4. Multivariate analysis showed that age (p<0.001) and treatment group (p=0.019) were significantly associated with death. Compared with group 1, treatment in the intensive care unit (p=0.003), loss of body weight (p=0.042), and decrease in hemoglobin (p=0.033) were worse in group 1. Conclusions: Endoscopic resection for synchronous esophageal and gastric cancer could be considered as a possible alternative to surgery for early-stage cancer.