Figure 1
From: Collagenous gastritis, a new spectrum of disease in pediatric patients: two case reports
(A) A photomicrograph of a colonic biopsy from the patient shows a representative field of sub-epithelial collagen accumulation (blue), mild lymphocytic inflammation of the overlying epithelium, and diffuse chronic inflammation of the lamina propria. (B) An adjacent field in the same biopsy shows similar changes, except the sub-epithelial collagen table is not thickened. (C) Focal sub-epithelial collagen accumulation and associated inflammation is also evident in this field from the patient's gastric biopsy. Bars = 20 microns; Mallory trichrome stain.