This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
Gasless abdomen in xRay is a sign of 
Select and explain. 
A. Acute pancreatitis, B. Necrotizing enterocolitis, C. Ulcerative colitis, D. Intussusception
A: Acute pancreatitis
Answer: A: Acute pancreatitis 
Explanation: 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