Achalasia and pneumonia

A 53-year-old Taiwanese man who was robust in the past presented with a 1-week history of low-grade fever, productive cough, a weight loss of 5 kg in the preceding 6 months and progressive dysphagia for solids and liquids. His vital signs and physical examination were unremarkable, except for crackles and dullness to percussion over the right upper lobe. …