31. EVALUATION OF QUALITY OF LIFE IN ESOPHAGEAL CANCER PATIENTS BEFORE AND AFTER RADIOTHERAPY AT TAN TRIEU GENERAL RADIATION THERAPY DEPARTMENT, K HOSPITAL. YHCĐ 2025, 66 (CĐ7-HNKH Bệnh viện K). https://doi.org/10.52163/yhc.v66iCD7.2414.