<prompt> Which of the following is seen in carcinoma oesophagus -Rat tail appearanceCorkscrew appearanceBird beak signCaterpillar sign  <response>: Ans. is a i.e., Rat tail appearance Rat tail appearance of esophagusEsophageal carcinomaMegaesophagus sigmoid esophagusBird beak appearance Hurst phenomenon Achalasia cardiaYo-Yo motion of bariumCorkscrew appearance esophageal curlingRosary-beadsheikh kebab configurationChain of bead appearance Diffuse esophageal spasm 