Collagenous Gastritis in Primary Selective IgM Deficiency: Transition to EBV+ Gastric Adenocarcinoma

<div>(a) 4x magnification of the results of upper endoscopy biopsy showing nonspecific chronic inflammatory infiltrate with a thickened subepithelial collagen table. (b) 20x magnification higher-power image of the thickened subepithelial collagen table, showing diagnostic features of entrapped cellular elements such as inflammatory cells and blood vessels.</div>

Case Reports in Immunology

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Figure 1

Figure 1: Collagenous Gastritis in Primary Selective IgM Deficiency: Transition to EBV+ Gastric Adenocarcinoma 