Artefact mimicking bilateral acute subdural haematomas
Motor vehicle accident with boggy swelling over occiput. Patient confused and disorientated.
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Scalp haematoma over the occiput at the vertex responsible for the boggy swelling. No skull fracture.
Hyperdense crescent overlying the right and left parietal lobe.
The bone window and 3D VR clearly identify patient movement with bony overlap responsible for the hyperdense crescents, explaining the apparent bilateral subdural haematomas posteriorly.
This example demonstrates that artefacts, e.g. due to patient movement, can mimic subdural haematomas, illustrating the importance of reviewing bone windows and 3D reconstructions.