# Finding a Needle in a Haystack: An Unusual Case of Foreign Body Aspiration

## TL;DR

A patient's childhood sewing needle aspiration led to a foreign body in the chest, preventing brain MRI due to risks from magnetic fields.

## Contribution

Highlights a rare case where a long-retained metallic foreign body impacts current medical imaging decisions.

## Key findings

- A sewing needle aspirated in childhood was found in the left thoracic cavity.
- The presence of the metallic foreign body made MRI contraindicated for brain imaging.
- The case underscores the long-term implications of foreign body aspiration.

## Abstract

Foreign body aspiration can have serious medical consequences ranging from asphyxiation to infection. Aspiration of sharp, metallic foreign bodies can also pose risks of vascular injury and damage to the surrounding tissue. On the other hand, in the presence of a foreign body, it should be noted that imaging techniques such as magnetic resonance imaging (MRI) may be contraindicated as they can lead to serious injury when the foreign bodies are brought under a magnetic field. We present a case of an incidental foreign body identified on chest radiography that prevented a brain MRI in a patient who had a history of sewing needle aspiration as a child, with its presence in the left thoracic cavity since that time.