# Contralateral Axillary Metastasis With Synchronous Ipsilateral Axillary Metastasis From Occult Breast Cancer: A Case Report With a Review of the Literature

## TL;DR

This case report describes a rare instance of breast cancer with metastasis to both axillary lymph nodes from an undetectable primary tumor.

## Contribution

The novelty lies in presenting a rare combination of contralateral and ipsilateral axillary metastasis from occult breast cancer in one patient.

## Key findings

- A 67-year-old woman presented with left axillary metastasis from occult breast cancer.
- She also had synchronous contralateral axillary metastasis, highlighting the complexity of this rare condition.
- The case emphasizes the need for tailored therapeutic approaches based on current guidelines.

## Abstract

Occult breast cancer (OBC) is a rare presentation of breast cancer, characterised by evidence of metastasis to axillary lymph nodes without a clear radiological lesion in the breast. Contralateral axillary metastasis (CAM) in breast cancer is another rare presentation, with various differentials. This case report presents a 67-year-old female with left axillary metastasis from an OBC with synchronous CAM. This case highlights the complexities of both rare presentations in a single patient and discusses the pertinent therapeutic recommendations from current literature and guidelines.