Histological features of the surgical specimen. A gross surgical specimen showed an ulcer in the tip of the appendix with no tumorous lesion (A). The histological sections revealed a severe infiltration of neutrophils and lymphocytes within a shallow ulcer (Hematoxilin eosin staining, ×40) (B).
Konno et al. BMC Gastroenterology 2013 13:152 doi:10.1186/1471-230X-13-152