Sharp mediastinum sign
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At the time the article was last revised Henry Knipe had the following disclosures:
- Radiopaedia Events Pty Ltd, Speaker fees (past)
- Integral Diagnostics, Shareholder (ongoing)
- Micro-X Ltd, Shareholder (ongoing)
These were assessed during peer review and were determined to not be relevant to the changes that were made.View Henry Knipe's current disclosures
The sharp mediastinum sign is a unique sign in neonatal chest x-rays for medial pneumothoraces or pneumomediastinum, especially as a complication to mechanical ventilation for respiratory distress syndrome (RDS).
As neonatal chest x-rays are taken with the neonate/infant supine, the air in the pleural space rises to paramediastinal locations, and the air creates a sharp contour around mediastinal structures 1.