This clinical sign is seen in <img src=" />: (A) Carcinoma colon, (B) Ulcerative colitis, (C) Crohn's disease, (D) Tuberculosis
Answer is C. This is a contrast study showing string sign of KantorIn Crohn&;s disease, edema, bowel wall thickening, and fibrosis of the bowel wall within the mass account for the radiographic "string sign" of a narrowed intestinal lumen.Ref: Harrison 19e pg: 1953