A patient presents to a physician because of troubling "heaburn" and difficulty swallowing. Esophageal motility studies demonstrate a near absence of smooth muscle peristalsis and lower oesophageal sphincter tone. No mass lesions are noted and the esophagus is not dilated. Which of the following findings would most likely also be present?
Anemia Atrophic glossitis Hourglass-shaped stomach on barium swallow Thick skin