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. Lymph nodes shows reactive follicular lymphoid hyperplasia with sinus histiocytosis. No evidence of appendicular tumors.
Acute appendicitis underwent an open appendectomy, with intraoperative findings revealing a firm lymph node at the base of the appendix and pelvic fluid.
Two samples were received:
1- Appendix measuring 6 x 0.8 cm., showing ulcerated gray appearance. The wall thickness measured 0.4 cm.
2- Lymph node measured 1.3x1 cm, totally embedded.