Physiology All India exam a994d0ea 'Sigmoid' esophagus on Ba Swallow is seen in A Achalasia cardia B Scleroderma C Diffuse esophageal spasm D Carcinoma esophagus High-Yield Explanation Esophageal motility disorders like diffuse esophageal spasm, presbyesophagus and nutcracker esophagus may show "cork screw" apperance.