How common are subdural haematomas in the setting of head trauma?
Prevalence of approximately 15%.
There is a 2.5 mm thick extra axial collection of high density material along the right tentorium cerebelli in keeping with subdural haematoma.
No evidence of intra-axial haemorrhage or acute large cortical territorial infarction. No skull fracture. There is extensive opacification of the right maxillary sinus with high density material in keeping with haematoma. Secretions in the nasal cavity and nasopharynx are shown.
There is a nasal bone fracture.
Acknowledgement: Dr Jan Gerstenmaier.