This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
[{'content': 'All of the following are diagnostic barium follow-through features of ileocecal tuberculosis Except – \nSelect and explain. \nA. Apple – core appearance, B. Pulled up contracted cecum, C. Widening of ileocecal angle, D. Strictures involving terminal ileum', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Radiological features of ileocecal tuberculosis on barium enema \n\nFleischner or inverted umbrella sign:- wide gaping of the ileocecal valve with narrowing of the terminal ileum.\nGooseneck deformity.\nConical cecum or Amputed cecum Cecum is shrunken in size and pulled out of the iliac fossa due to fibrosis and contraction of mesocolon.\nStierlin sign:- Narrowing of terminal ileum with rapid emptying into a shortened, rigid or obliterated cecum.\nString sign\nWidening of ileocecal (IC) angle\nPurse string (napkin ring) stenosis\nDiscrete and transverse or star-shaped (stellate) ulcers with elevated margins.', 'role': 'assistant'}]