A 25-year-old man presents with progressive dysphagia to solids. You order an upper endoscopy. What do the results tell you?
A 25-year-old man presents with dysphagia to solids that has progressed over the past year. He now avoids breads, meats, and other foods he fears may lodge in his esophagus. Liquids present no problem. PMH includes eczema and seasonal allergies. Upper endoscopy image is shown.
What is your diagnosis?