# Breast Pseudoaneurysm Following a Motor Vehicle Collision

## TL;DR

A rare case of breast pseudoaneurysm after a car crash was successfully treated with pressure and found to resolve on its own.

## Contribution

This paper presents a rare case of breast pseudoaneurysm caused by blunt trauma rather than medical procedures.

## Key findings

- A 67-year-old woman developed a breast pseudoaneurysm following a motor vehicle collision.
- The pseudoaneurysm spontaneously thrombosed with only external pressure treatment.
- Breast pseudoaneurysms may be underreported due to their potential for spontaneous resolution.

## Abstract

A breast pseudoaneurysm (PSA) is a rare complication, with most cases reported following breast procedures. There are few reported cases of breast PSAs following blunt trauma. We report a rare case of right breast PSA in a 67-year-old female following a motor vehicle collision. The PSA was managed with a simple external pressure dressing over the breast and was found to have spontaneously thrombosed on a follow-up visit. Breast PSAs may be more common than expected due to their ability to spontaneously resolve and should be considered in patients presenting with a pulsatile breast mass or injury to the breast, especially when accompanied by a history of recent breast trauma or procedure.