This study is a multicenter cross-sectional survey of esophageal cancer patients who underwent radical chemoradiotherapy/radiotherapy from July 2017 to July 2020 in various medical centers, and who survived without disease progression at the time of the survey. The purpose of this study is to evaluate the current quality of life, as well as the incidence of long-term toxic side effects, nutritional status, and psychological status of esophageal cancer patients cured by radiotherapy.

Inclusion Criteria:

• Voluntarily accept this survey and research;
• The age at the time of radiotherapy is between 18-75 years old, and the age at the time of investigation is<80 years old;
• Histologically confirmed esophageal squamous cell carcinoma without undergoing surgical resection;
• Received radical chemoradiotherapy/radiotherapy from July 2017 to July 2020, currently alive and without disease progression;
• Radiotherapy dose ≥ 45Gy.

Exclusion Criteria:

• Patients who do not cooperate with this survey;
• Patients who have died at the time of investigation;
• Patients who experience tumor progression within the time frame from the end of radiotherapy to receiving this survey;
• Patients diagnosed with other malignant tumors within the time frame from the end of radiotherapy to receiving this survey;
• Patients with incorrect contact information and missing visits

The age at the time of radiotherapy is between 18-75 years old, and the age at the time of investigation is<80 years old;

• Histologically confirmed esophageal squamous cell carcinoma without undergoing surgical resection;
• Received radical chemoradiotherapy/radiotherapy from July 2017 to July 2020, currently alive and without disease progression;
• Radiotherapy dose ≥ 45Gy.