Subdural haemorrhage

Case contributed by Dr Aditya Shetty


Head injury following fall from a bike ; road traffic accident.

Patient Data

Age: 35
Gender: Male
Modality: CT

Abnormal hyper dense area of blood HU (avg. HU 62) is noted along the right cerebral convexity

It is seen to extend along the fronto-temporo-parietal convexity and is crescent shaped 

It is causing mild mass effect as seen at the level of the lentiform nucleus

Modality: Annotated image

Yellow arrows indicate the hyper dense area extending along the right cerebral convexity

It is a subdural haemorrhage 

Case Discussion

Case of acute subdural hemorrhage

It is a type of extra-axial bleed

Other known type is the extradural/ epidural haemorrhage

Subdural bleed has 3 phases:

  • acute
  • subacute
  • chronic

The density of the bleed decreases with time from blood HU (50-70) to near CSF HU (10-15)

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Case Information

rID: 27889
Case created: 25th Feb 2014
Last edited: 1st Oct 2015
Tag: shetty
Inclusion in quiz mode: Included

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