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Table 1 Clinical, endoscopic and radiological features which aid in differentiation of Crohn disease from intestinal tuberculosis [2, 3]

From: Intestinal tuberculosis masquerading as difficult to treat Crohn disease: a case report

Crohn disease Intestinal tuberculosis
Clinical
Prolonged remitting and relapsing course Continuous disease of short duration
Bleeding per rectum High fever
Diarrhoea Ascites
Perianal disease  
Intestinal fistulae  
Extra-intestinal manifestations  
Endoscopic
Longitudinal ulcers Transverse ulcers
Aphthous ulcers Ulcer scars
Cobblestone-like mucosa Patulous ileocaecal valve
Isolated terminal ileal involvement with relative caecal sparing  
Anorectal lesions  
Contrast enhanced CT
Multiple levels of involvement Involvement of less than four segments
Symmetric and concentric bowel wall thickening Asymmetric bowel wall thickening
Mural stratification (target sign) Large necrotic mesenteric lymph nodes
Increased mesenteric vascular stranding (comb sign)  
Fibrofatty proliferation in the mesentery (pathognomonic)