746. ESOPHAGECTOMY, WITH CHOLECYSTECTOMY HAS A HIGH INCIDENCE OF REFLUX ESOPHAGITIS AND GASTRIC TUBE ULCER

The surgical methods for thoracic esophageal cancer was subtotal esophagectomy, with gastric pull up via retrosternal route, and cervical anastomosis. However, some cases were complicated by acute cholecystitis in the early postoperative period, and cholecystectomy was performed intraoperatively to prevent postoperative cholecystitis in some cases. The disruption of normal anti-reflux mechanisms including the lower esophageal sphincter, angle of His, and diaphragmatic muscle and the denervation of the vagus nerve are generally thought to be the main factors that interfere with gastric motor function. Furthermore, the pressure difference between thoracic (negative) and abdominal cavity (positive) is another factor that promotes reflux across the anastomosis. Due to these factors, postoperative reflux esophagitis is frequently experienced. Furthermore, after cholecystectomy, due to loss of gallbladder reservoir function after cholecystectomy and decrease in antroduodenal motility, bile is not excreted by food intermittently but continuously, resulting in duodenogastric reflux. We investigated postoperative reflux esophagitis and gastric tube ulcers in cases with and without intraoperative cholecystectomy for the past three years. We investigated cholecystectomy with esophagectomy (n=65) and non-cholecystectomy with esophagectomy (n=101) in 166 cases of radical surgery for esophageal cancer in which 2-3 regions had been dissected in the past 3 years. As shown in Fig. 1, there are no differences in location, TNM, gender, and PPI administration .reflux esophagitis of the cervical esophagus is A:0 B:2 (3%), C:5 (8%), D:3 (5%) for chole(+), A:2 (2%), B:2 (2%), C:2 (2%), and D:2 (2%) for chole(-). Gastritis was Chole(+) superficial gastritis 14 (21%), metaplasia 4 (6%), chole(-) superficial gastritis 25 (25%), metaplasia 3 (2%). However, gastric tube ulcers occurred in 5 cases (7%) of Chole(+) and 1 case of perforation, while only 1 case (1%) of gastric tube ulcers occurred in Chole(-).. (Conclusion) Esophagectomy, gastric pull up with cholecystectomy has a high incidence of reflux esophagitis in the neck and can also cause ulcers in the gastric tube. Therefore, care should be taken in postoperative follow-up.