Fundamental Radiological Findings: Subcutaneous Emphysema

OVERVIEW

This page is dedicated to covering the important radiological finding of subcutaneous emphysema. Look here for more radiological findings.

WHAT IS IT?

Subcutaneous emphysema refers to a finding on radiological studies where gasser is in the layer under the skin. This finding can be present on many different radiological studies.

Chest X-Ray:

Presence of pneumomediastinum (white arrows) and subcutaneous emphysema (black arrow) in a patient (source).
DIFFERENTIAL DIAGNOSIS FOR THIS FINDING

When seeing a subcutaneous emphysema, it is important too keep in mind the following possible causes of this finding:

  • Rupture of the trachea: this can be caused by traumatic intubation.
KEY FEATURES TO LOOK FOR WHEN CHARACTERIZING THE FINDING

When seeing a subcutaneous emphysema, there are a few important radiological features one should look at to try and characterize the finding. These features can help navigate the differential diagnosis above.

 

Page Updated: 01.07.2017