<prompt> Gasless abdomen in xRay is a sign ofAcute pancreatitisNecrotizing enterocolitisUlcerative colitisIntussusception  <response>: Radiological appearance of Acute pancreatitis Renal halo sign Gasless abdomen. Ground glass appearance Colon cut off sign Sentinel loop Ref: Sabiston 20th edition Pgno : 1527 