Upper Endoscopy: A scope allows doctors to visualize the esophagus lining and take biopsies if necessary.
Barium Swallow: This series of X-rays can detect structural abnormalities, narrowing, or masses.
Esophageal Biopsy: This helps determine whether any abnormalities in the esophagus are benign (such as polyps) or malignant (such as esophageal cancer).