Artefact mimicking bilateral acute subdural haematomas

Case contributed by Dr Chris O'Donnell

Presentation

Motor vehicle accident with boggy swelling over occiput. Patient confused and disorientated.

Patient Data

Age: 17 years
Gender: Female

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.

Case Discussion

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.

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Case information

rID: 18267
Published: 24th Jun 2012
Last edited: 7th Apr 2018
Inclusion in quiz mode: Included

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