Figure 4.

Characteristics of the inflammatory infiltrate in progressing and nonprogressing cases. (A) The severity of inflammation was assessed by two observers and divided in severe (diffuse, 2), moderate (patchy, 1) and mild (focal, 0) (p < 0.001, independent‐samples Mann–Whitney U test), (B) the presence of neutrophils was assessed and categorized as diffuse (2), focal (1) or no neutrophils (0) (p < 0.002, independent‐samples Mann–Mann–Whitney U test), (C) The presence of intraepithelial migration was assessed and categorized as diffuse (all layers, 3), diffuse (basal layer, 2), focal (1) and absent (2). (p < 0.001, independent‐samples Kruskal–Wallis test).