PMC4038641_01
(A) Duodenal mucosa (H&E, 10x) with focally complete villous atrophy and moderate lymphoplasmocytic and granulocytic infiltration of the L. propria, cryptitis, and focal crypt abscesses (arrow). (B) Multiple Giardia lamblia trophozoites (arrow) adjacent to the apical duodenal epithelium (H&E, 40x).
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However, further histological analysis identified Giardia lamblia trophozoites adjacent to duodenal epithelium, thus establishing the diagnosis of intestinal giardiasis (Figure 1A, 1B).