This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Esophageal Motility Disorders, Subject name: Surgery
[{'content': 'Corkscrew esophagus is seen in - \nSelect and explain. \nA. Diffuse esophageal spasm, B. Achalasia Cardia, C. Carcinoma of esdophagus, D. Esophageal web', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Diffuse esophageal spasm o Radiological appearances of diffuse esophageal spasm have been described as:# Curling esophagus# Corkscrew esophagus or# Pseudodiverticulosis", 'role': 'assistant'}]