Figure 1. Perioperative changes in respiratory function (RF) after esophageal carcinoma surgery according to surgical techniques. Patients were classified into transthoracic esophagectomy (TTE) and transmediastinal esophagectomy (TME) groups and evaluated by calculating the change ratio of: A) vital capacity (VC) with postoperative VC/preoperative VC; B) %VC with postoperative %VC/preoperative %VC; C) forced expiratory volume in one second (FEV1.0) with postoperative FEV1.0/preoperative FEV1.0; and D) FEV1.0% with postoperative FEV1.0%/preoperative FEv1.0%.*p<0.05.
