# Metastatic Melanoma Mimicking Primary Breast Cancer—A Diagnostic Challenge: A Case Report

## TL;DR

A case report highlights how metastatic melanoma can mimic primary breast cancer, emphasizing the need for careful diagnosis.

## Contribution

The novelty lies in presenting a rare case of metastatic melanoma in the breast, underscoring diagnostic challenges.

## Key findings

- Metastatic melanoma can appear as a breast nodule and be mistaken for primary breast cancer.
- Accurate diagnosis requires histological and immunohistochemical analysis along with clinical history.
- The patient's history of melanoma and atypical presentation were key to identifying the metastasis.

## Abstract

Metastatic melanoma to the breast is rare and may be misdiagnosed as primary breast carcinoma. Histological, immunohistochemical, and clinical correlations, such as a history of previous melanoma, are essential for diagnosis.

A female patient presented with melanoma in the left gluteal region. Five years later, a palpable nodule was detected in the right breast on routine mammography. Microscopic and immunohistochemical examination confirmed the diagnosis of metastatic melanoma. The patient passed away 3 years later.

The findings in this case indicate that metastatic melanoma can present in atypical ways and that specialists should pay attention to metastases in unusual locations in cases of melanoma.