Glass foreign body
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Glass foreign bodies may be present if they are ingested, inserted or as a result of an injury.
Epidemiology
The prevalence of glass foreign bodies in wounds from injury has been recorded at a rate of 1.5% in superficial (subcutaneous) wounds and 7.5% of deeper wounds 1.
Radiographic appearance
Plain radiograph
Only ~10% of x-rays ordered for investigation of retained foreign bodies are positive (reflecting the low incidence post injury), but x-rays are excellent at detecting radiopaque foreign bodies with ~85% being detected 6:
- glass is always radiopaque, independent of lead content or other additives
- should be visible on plain films if larger than 2 mm 2, 5
Ultrasound
- can be used to localise foreign bodies further and define the relationship with soft tissue structures and assess for further injuries
- appears hyperechoic with posterior shadowing and often demonstrates reverberation artifact
- if present for >24 hours may demonstrate a hypoechoic ring 3-4
-<p><strong>Glass foreign bodies</strong> may be present if they are ingested, inserted or as a result of an injury. </p><h4>Epidemiology</h4><p>The prevalence of glass <a href="/articles/foreign-bodies">foreign bodies</a> in wounds from injury has been recorded at a rate of 1.5% in superficial (subcutaneous) wounds and 7.5% of deeper wounds <sup>1</sup>. </p><h4>Radiographic appearance</h4><h5>Plain radiograph</h5><p>Only ~10% of x-rays ordered for investigation of retained foreign bodies are positive (reflecting the low incidence post injury), but x-rays are excellent at detecting radiopaque foreign bodies with ~85% being detected <sup>6</sup>:</p><ul>- +<p><strong>Glass foreign bodies</strong> may be present if they are ingested, inserted or as a result of an injury. </p><h4>Epidemiology</h4><p>The prevalence of glass <a href="/articles/foreign-body-1">foreign bodies</a> in wounds from injury has been recorded at a rate of 1.5% in superficial (subcutaneous) wounds and 7.5% of deeper wounds <sup>1</sup>. </p><h4>Radiographic appearance</h4><h5>Plain radiograph</h5><p>Only ~10% of x-rays ordered for investigation of retained foreign bodies are positive (reflecting the low incidence post injury), but x-rays are excellent at detecting radiopaque foreign bodies with ~85% being detected <sup>6</sup>:</p><ul>
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Image 9 Ultrasound ( create )
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