Esophagitis and esophageal cancer are different diseases.

Esophagitis refers to inflammatory changes in the esophagus, characterized by mucosal congestion, edema, and even erosion, commonly seen in middle-aged patients. Patients most often seek medical attention for abdominal discomfort or chest pain, and some may also experience nausea, belching, and so on. Esophageal cancer is more common in older patients, primarily presenting with progressively worsening dysphagia, accompanied by nausea, vomiting, and so on. Some cancer symptoms may be similar to those of esophagitis. The main method for differential diagnosis includes a thorough gastroscopic examination to provide further clarification. Esophagitis mainly manifests as inflammatory changes in the esophageal mucosa; in the case of esophageal cancer, a gastroscopic examination can directly reveal esophageal tumors, thereby facilitating differentiation.