Tests and procedures to diagnosis esophageal cancer may include an imaging test (CT or CAT, MRI or PET scans), a barium swallow or an endoscopy exam. An endoscopic ultrasound examination is a ...
5. Allergy to barium (though this is quite rare). 1. Time constraints due to radiation exposure. 2. As the procedure only samples swallow function, it does not fully represent mealtime function.