<prompt> A 70 year old patient comes with symptoms of achalasia from 3 months. Radiologic features and manometric studies show the typical features of achalasia. What is the next stepCT scanHellers myotomyNissens fundoplication24 hour ph monitoring  <response>: This might be the case of pseudo achalasia. It is suspected whenPatient older than 60Dysphagia less than 6 monthsExcessive weight lossSometimes infiltrating tumor at gastroesophageal junction will mimic achalasia symptoms and manometric studies. To rule out tumor CT scan must be done 