Fig. 3

Histopathological findings of the extracted appendix. The pathological findings were consistent with phlegmonous appendicitis. The gross appearance revealed whole layer necrosis at the apical side of appendix, whereas the inflammation at the basal side of the appendix was limited. Fecaliths were found inside the appendix (a). b–d The markedly inflamed appendix with mucosal ulceration and transmural neutrophilic inflammation extending through the muscularis propria to the serosal surface. c Shows a high power field of the box in b. The scale bar indicates 500 µm in b; 200 µm in c; 50 µm in d. The magnification is ×40 in b; ×100 in c; ×400 in d