Appendiceal Diverticulitis Clinically Masquerading as an Appendiceal Carcinoma

Figure 4

(a) Low power features of appendiceal diverticula. Many diverticula are seen in this section. The diverticula penetrate the muscular layer, suggesting that they are congenital in origin. Much fibrosis and inflammation are seen in the subserosal walls which contain a very thin muscle layer. HE ×5. (b) High power view shows luminal abscess and much fibrosis and lymphocytic infiltration of the subserosa. HE ×50. (c) High power view shows diverticula with penetration. HE ×50.

(a)

(b)

(c)