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: Surgery
Fleischner sign on barium study is seen in 
Select and explain. 
A. Ileocecal TB, B. Crohns disease, C. Small bowel carcinoid, D. Typhoid
A: Ileocecal TB
Answer: A: Ileocecal TB 
Explanation: Fleischner sign is seen in Ileocaecal Tuberculosis. In barium X-ray, Narrow ileum with thickened Ileocaecal valve is seen, which is known as Fleischner sign or Inveed umbrella sign. Reference : SRB's Manual of Surgery, 6th Edition, page no = 576