<prompt> Kalu, 35-year old male presented with the history of recurrent attacks of colicky abdominal pain. Barium meal follow through was done. What is the name of this radiological sign?String sign of KantorGoose neck appearanceFleishners signUmbrella sign  <response>: On Barium meal follow throughIn GI TB -contraction of mesocolon 1. Pulled - up cecum 2. Obtuse IC Angle 3. Goose Neck Deformity - Rapid uptake of barium into colon due to Formation of Transverse ulcers in ileum which causes hyper irritability- Narrowed appearance of ileum aka STERLEIN SIGN.- Persistent narrowing due to strictures - STRING SIGN OF KANTOR- Sterlein sign string sign of Kantor - are seen in GITB, as well as Crohns disease.- In chronic cases, thickened IC valve, rigid cecum, narrowed ileum is known as UMBRELLA SIGN FLIESHERS SIGN 