Procedures
tumor
ADVERSE EVENT, TUMOR, RESIDUAL TUMOR, ADVERSE EVENT, ULCERS
Patients received percutaneous endoscopic gastrostomy 1–2 weeks prior to CCRT. Gastrostomy tubes were placed via the “pull” technique, the method initially introduced by Gauderer et al.Patients were immobilized according to the standard protocol in our center.S‐1 was administered concurrently via the oral route twice a day for 40 mg/mHematological tests and weight were evaluated weekly during treatment. Adverse events assessment was according to the Common Terminology Criteria for Adverse Events (version 5.0). The tumor response was evaluated 2 months after the CCRT based on endoscopy and biopsy (if necessary), contrast‐enhanced computed tomography (CT) of the neck, chest, and upper abdomen, and chest magnetic resonance imaging (MRI). After the tumor response evaluation, a percutaneous endoscopic gastrostomy tube could be removed for patients without deep ulcers or residual tumors in their esophagus. Patients then received regular follow‐ups thereafter.