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What is Fleischner sign on barium study is seen in? and explain in detail?
Answer- A. Ileocecal TBEarly involvement of the ileocaecal region manifesting as spasm and edema of the ileocecal valve.Thickening of the Iips of the ileocecal valve and/or wide gaping of the valve with narrowing of the terminal ileum ('Fleishner" or 'inveed umbrella sign') are characteristic.