# Metastatic Breast Cancer Presenting as Acute Appendicitis: A Case Report and Literature Review

## TL;DR

A woman with no cancer history was diagnosed with metastatic breast cancer after surgery for what was thought to be appendicitis.

## Contribution

This case highlights the rare occurrence of breast cancer metastasis to the appendix, presenting as acute appendicitis.

## Key findings

- A 43-year-old woman with no cancer history was found to have metastatic breast cancer in her appendix.
- Histopathological analysis confirmed the diagnosis after laparoscopic appendectomy.
- This case adds to the limited literature on gastrointestinal tract involvement by breast cancer.

## Abstract

Breast cancer is considered one of the most common cancers worldwide. The most common sites for breast cancer to metastasize are the lymph nodes, bones, lungs, brain, and liver. Involvement of the gastrointestinal tract is uncommon, and metastasis to the appendix is rare. We report a case involving a 43-year-old woman with no previous history of malignancy who presented with acute appendicitis and underwent laparoscopic appendectomy, with the final histopathological assessment revealing metastatic breast cancer.