Fleischner sign on barium study is seen in
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
Ileocecal TB
Crohns disease
Small bowel carcinoid
Typhoid
G.I.T