Appendicular lumen is full of neutrophils that extend into wall in between the mucosal associated lymphoid tissue together with lymphocytes and plasma cells. Such infiltrate extends to periappendicular fat, amounting at abscess formation. Impacted fecolith is noted. Sections of the separate fatty tissue show mature adipose tissue with prominent vascular congestion, focal interstitial hemorrhage, and a marked chronic inflammatory infiltrate containing hemosiderin-laden macrophages. No evidence of specific granulomas. No evidence of appendicular tumors.
Perforated appendix with pus collection.
Appendix measuring 6 x 0.8 cm. The attached mesoappendiceal fat measured 5 x 1.8 cm and showed a ulcerated gray appearance. The wall thickness measured 0.4 cm. Also received was a separate piece of fatty soft tissue, measuring 5.5 x 4 x 1 cm.