Retrotracheal space

Dr Henry Knipe et al.

The retrotracheal space (or Raider triangle) is a radiolucent mediastinal space best seen on lateral chest x-rays. It is normally triangular in shape but can vary greatly in size and shape depending on the patient's body habitus and lung volume 1.


Chest x-ray
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Article information

rID: 23539
System: Chest
Section: Approach
Synonyms or Alternate Spellings:
  • Retro-tracheal space
  • Raider triangle

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