For the Past Several Months, a 43-Year-Old Man Has Been

For the past several months, a 43-year-old man has been evaluated for retrosternal discomfort and dysphagia. He smokes a pack of cigarettes every day and consumes alcohol on weekends. His body mass index (BMI) is 32.8 kg/m². The physical exam is unremarkable. Esophageal manometry is performed; the tracings appear as shown in the image below after a single swallow of 5 mL of water. Which of the following is the most likely diagnosis in this patient?

A) Achalasia
B) Cricopharyngeal dysfunction
C) Diffuse esophageal spasm
D) Esophageal stricture
E) Systemic sclerosis

Correct Answer:

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