The most serious complication following esophagectomy and conventional intrathoracic esophagogastrostomy is anastomotic leakage, which contributes to both a high mortality and morbidity postoperatively. The incidence of anastomotic leakage reported in a recent 10 year period ranged from 3% to 18%, with a mean of 4.9%. A series of 433 esophagogastrostomies were performed in our institute from 1954 to 1981 for various esophageal lesions, including 414 cases of carcinoma of the esophagus. A conventional esophagogastrostomy was carried out in 319 patients and 12 leaks occurred postoperatively, an incidence of 3.7%. In comparison, another group of 114 patients underwent "tunnel" esophagogastrostomy, a technique that we designed. There was only one leak, an incidence of 0.87%. The "tunnel" esophagogastrostomy is therefore recommended as a reliable operative procedure for minimizing the incidence of anastomotic leakage. The operative technique is described in detail.