Pediatric Collagenous Gastroenterocolitis Successfully Treated with Methotrexate

Figure 1

Histopathologic findings of collagenous gastroenterocolitis. Increased subepithelial collagen. (a) Collagenous gastritis (stomach, trichrome). (b) Collagenous gastritis, high magnification (stomach, trichrome). (c) Collagenous duodenitis (duodenum, H&E). (d) Collagenous duodenitis (duodenum, trichrome).

(a)

(b)

(c)

(d)