This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oesophagus, Subject name: Surgery
All are true of achalasia cardia, except: 
Select and explain. 
A. Dysphagia, B. Aspiration pneumonitis, C. Mecholyl test is hyposensitive, D. X-ray finding of dilated esophagus with a narrow end
C: Mecholyl test is hyposensitive
Answer: C: Mecholyl test is hyposensitive 
Explanation: Ans. (c) Mecholyl test is hyposensitiveRef OESO/2011Internet* Mecholyl test - has been used to demonstrate hypersensitivity in LES for years and to differentiate the Achalasia from carcinoma.* It is not used nowadays.