Subdural hemorrhage

Case contributed by Dr Aditya Shetty


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

Patient Data

Age: 35
Gender: Male

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

Annotated image

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

It is a subdural hemorrhage 

Case Discussion

Case of acute subdural hemorrhage

It is a type of extra-axial bleed

Other known type is the extradural/ epidural hemorrhage

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
Published: 25th Feb 2014
Last edited: 14th Aug 2019
Tag: shetty
Inclusion in quiz mode: Included

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