Mariya Kobi MD, Presenter: Nothing to Disclose

Neal Viradia MD, Abstract Co-Author: Nothing to Disclose

Alexander Benjamin Baxter MD, Abstract Co-Author: Nothing to Disclose

Mark Philip Bernstein MD, Abstract Co-Author: Nothing to Disclose

Aspan Singh Ohson MD, MS, Abstract Co-Author: Nothing to Disclose

John Michael McMenamy MD, Abstract Co-Author: Nothing to Disclose

1. Review of easily missed findings on non-contrast CT head. 2. Present teaching points on how to avoid the errors.  

Examples of easily missed pathology on noncontrast CT head including but not limited to the following: 1. Posterior fossa mass with 4th ventricle mass effect 2. Isodense subdural hematoma 3. Retrobulbar hemorrhage 4. Temporal bone fracture with ossicular dislocation 5. Dural venous sinus thrombosis 6. Subtle SAH in the interpeduncular cistern 7. Rapid expansion of a small subdural hematoma 8. Vertex epidural hematoma 9. Diffuse axonal injury 10. Hypotension mimicking dural venous thrombosis 11. Acute CVA “subinsular ribbon sign” 12. Meningitis: mild hydrocephalus 13. HSV encephalitis: inferior frontal or temporal edema 14. AVM on non-contrast head CT 15. Thin SDH visible only visible on wide windows 16. Leptomeningeal carcinomatosis 17. Orbital subperiosteal hematoma 18. Globe tenting 19. Posterior fossa infarct 20. Acute obstructive hydrocephalus  

http://abstract.rsna.org/uploads/2014/14008962/14008962_vsg5.pdf

Kobi, M, Viradia, N, Baxter, A, Bernstein, M, Ohson, A, McMenamy, J, Easily Missed Findings in the Emergency Department on Routine Non-contrast Head CTs with Potential for Significant Consequences.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14008962.html