Tests used to help diagnose esophageal cancer may include:
Barium swallow
Chest MRI or thoracic CT (usually used to help determine the stage of the disease)
Endoscopic ultrasound (also sometimes used to determine the stage of disease)
Esophagogastroduodenoscopy (EGD) and biopsy
PET scan (sometimes useful for determining the stage of disease, and whether surgery is possible)
Stool testing may show small amounts of blood in the stool.