<prompt> Fleischner sign on barium study is seen inIleocecal TBCrohns diseaseSmall bowel carcinoidTyphoid  <response>: 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 : SRBs Manual of Surgery, 6th Edition, page no 576 