To prospectively enroll participants undergoing gastroscopy at Zaduo County People's Hospital and perform paired analyses with matched cases from Jilin Province. This aims to characterize the endoscopic features of esophageal diseases specific to the high-altitude population in Zaduo County.
Aged ≥18 years;
Resided in Zaduo County for ≥6 months;
Undergoing painless (sedated) gastroscopy at our institution;
Absence of severe cardiopulmonary diseases or other conditions contraindicating gastroscopy;
Emergency endoscopy;
History of partial or total esophagogastrectomy;
Planned endoscopic ultrasound (EUS) or endoscopic submucosal dissection (ESD);
Comorbidities including severe cardiac, hepatic, or renal dysfunction, or malignant tumors;
Jilin University
Lead sponsor
Zaduo County People's Hospital
Collaborator