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Surgery
A 30 year old female presents with dysphagia and heart burn. The present complaint started progressing gradually for the past few months. Now dysphagia is present for both solids and liquids. There is a progressive weight loss of about 6 kg in 2 months. Barium swallow showed bird beak deformity. What is the most likely cause for this presentation?
Atrophy and sclerosis of the distal two thirds of esophagus
Non-relaxing lower esophageal sphincter
Esophageal stricture due to acid reflux
Diffuse spasm of the esophagus
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