1 MCQs in Surgery for NEET PG
A 72-year-old male with an 18-month history of oropharyngeal dysphagia, regurgitation of undigested food, halitosis, and a recent aspiration pneumonia undergoes flexible upper GI endoscopy. The endoscopic image shows a posterior pharyngeal outpouching with the structure marked **A** containing retained food debris and mucus, separated from the true esophageal lumen by a prominent cricopharyngeal bar. Which of the following best explains the pathophysiology of food retention within the structure marked **A**?
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