Abstract
Coeliac disease (CD) is an autoimmune enteropathy which occurs in genetically predisposed individuals on exposure to gluten. The recommended diagnostic approach includes serological screening by Anti-tissue Transglutaminase antibody (anti-tTG) followed by a small intestinal biopsy. As high anti-tTG antibody is expected to be significantly associated with MARSH III histopathological changes in the small intestine, it has now become the basis for a biopsy-free approach to diagnose CD. However, we report cases of giardiasis mimicking CD both clinically and serologically; differentiation demands small intestinal biopsy.
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