Prediction of Anastomotic Complications and Recurrent Laryngeal Nerve Injury Based on Postoperative Early Endoscopic Evaluation

Inclusion Criteria: 1. Diagnosed with esophageal squamous cell carcinoma; 2. 18 - 80 years old; 3. ECOG PS 0-1; 4. Thoracic esophageal cancer (20-40cm from the incisors); 5. Received radical resection of esophageal cancer in our hospital from April 2024 to July 2024; 6. Received the McKeown procedure in our hospital's single treatment group; 7. Received gastric reconstruction and cervical anastomosis with a side-to-side anastomotic device; 8. Complete clinical materials. Exclusion Criteria: 1. History of other malignant tumors; 2. Incomplete or missing clinical materials; 3. Received combined surgery (total laryngectomy + esophagectomy, esophagectomy + lung resection, esophagectomy + aorta, etc.); 4. Gastric reconstruction or cervical anastomosis with a side-to-side anastomotic device was not performed; 5. Patients who underwent 3-field lymph node dissection; 6. Patients with clear intraoperative recurrent laryngeal nerve section; 7. Highly suspected anastomotic fistula before the first endoscopic evaluation (abnormal secretion at the cervical anastomotic site, abnormal drainage fluid in the chest tube, and high fever that other reasons cannot explain); 8. Lost to follow-up.