The Radiology Partners (RP) Neuroradiology National Subspecialty Division (NSD) presents our newest Rad to Rad Learning case.
Peer Learning Opportunity
Rapid expansion is common reaching maximum size at 36 hours resulting in neurologic deficits and death in up to 5% due to herniations.
Hyperdense biconvex unilateral extra axial collection adjacent to a skull fracture in 75% of cases.


Practical Insights 
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- Common “lucid interval” in up to 50% of cases.
- Typically associated with arterial laceration, but up to 10% are venous.
- Consider CTV if collection crosses suture.
- Bilateral EDH have up to 15-20% mortality rate.
Takeaway: Use bone window to look for fracture.
Shared to improve patient safety and healthcare delivery in the provision of radiology services. The circumstances and facts are changed, altered, or deidentified to preserve confidentiality. Privileges have not been waived.
The Neuroradiology National Subspecialty Division (NSD) is part of RP’s Clinical Value Team, which works to elevate patient care and enhance value through innovation, collaboration and education. To advance this goal, our radiologists and advanced practice providers are committed to sharing peer learning as valuable reminders and insights about what we encounter in our day-to-day practice. Check back here and on X, LinkedIn and Instagram to see these common cases and our findings.
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Radiology Partners, through RP Clinical Services and its managed practices, together with Mosaic Clinical Technologies, Inc., its technology and AI division, is the leading provider of technology-enabled radiology services in the U.S., serving more than 3,400 hospitals and other healthcare facilities with high-quality radiology, technology and artificial intelligence solutions. As a physician-led and physician-owned practice, our mission is to transform radiology by innovating across clinical value, technology, and service, while elevating the role of radiology and radiologists in healthcare. For the latest news from RP, follow us on X, LinkedIn, Instagram, YouTube and the blog.







