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) | |