# A Case of Acute Appendicitis With Mucocele, Serrated Adenoma, and Enterobius vermicularis as Underlying Etiologies

## TL;DR

A 58-year-old man had acute appendicitis caused by a rare combination of a mucocele, serrated adenoma, and a parasitic infection.

## Contribution

This case uniquely combines mucocele, serrated adenoma, and Enterobius vermicularis in complicated acute appendicitis.

## Key findings

- The patient had an appendicular abscess resolved with antibiotics.
- Colonoscopy revealed a mucocele, and histology showed serrated adenoma and Enterobius vermicularis.
- The case highlights a rare combination of pathologies in acute appendicitis.

## Abstract

A 58-year-old male presented to the emergency department with a clinical picture compatible with an appendicular abscess, which was resolved with parenteral antibiotics.

A colonoscopy showed mucus protruding through the appendicular lumen, compatible with the appendicular mucocele.

A laparoscopic appendectomy was performed. Histology revealed serrated adenoma, luminal Enterobius vermicularis,lymphoid hyperplasia, and features of chronic and acute inflammation of the appendix.

This case is unique, as all these features, i.e., mucocele, serrated adenoma, and Enterobius vermicularis, are simultaneously present in complicated acute appendicitis.