This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: Surgery
[{'content': 'Gas absent from intestine (gasless abdomen) on x-ray is seen in which condition? \nSelect and explain. \nA. Acute pancreatitis, B. Necrotizing enterocolitis, C. Intussusception, D. Ulcerative collitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Acute pancreatitis - In acute pancreatitis due to damaged duct and acini there is extravasation of pancreatic enzymes such as lipase into the peritoneal cavity. - This causes digestion of fat of greater omentum which in turn leads to formation of fatty acid & glycerol. - Free fatty acid combines with calcium and leads to formation of chalky white deposits known as "SAPNOFICATION" - Patients of pancreatitis presents with hypocalcaemia as calcium is used up for saponification. - The pancreatic enzymes that entered into peritoneal cavity also causes Paralytic ileus - X-ray findings of Paralytic ileus: Gasless abdomen Ground Glass appearance Sentinel loop Colon cut-off sign', 'role': 'assistant'}]