cctpat15

F: 1) Large left-sided temporoparietal "white" (hyperdense) area with typical biconvex shape, 2) compression of the left ventricle and 3) midline shift to the right side. 4) Swollen extradural soft tissue with "white" parts

H: Young adult man, 28-years-old, road traffic accident about 5 hours ago. The patient is of reduced conscious level since one hour. Nonreacting pupil (widely dilated) on the left side. There was a lucid interval, that followed the patient`s recovery from the brief loss of consciousness. Left temporoparietal evidence of soft tissue defect because of injury to the head.

INFO/WWW-LINKS Fresh blood is high density compared with brain on CT and, at brain windows, appears white. As the clot absorbs, the lesion becomes isodens (2-3 weeks after bleeding) and, later, of low attenuation
Sites of intracranial heamorrhage/haematoma:
1) Between inner tabel and dura = extradural heamorrhage/haematoma
2) Between dura and arachnoid = subdural heamorrhage/haematoma
3) Between arachnoid and brain surface = subarachnoid heamorrhage/haematoma
4) Within brain = intracerebral heamorrhage/haematoma
5) Within ventricles = intraventricular heamorrhage/haematoma Rising intracranial pressure can be caused by e. g. head injury, meningoencephalitis, haemorrhage or cerebral oedema and tumour

D: 1) extradural haematoma with typical biconvex shape. 2) Compression of the left ventricle and 3) midline shift to the right side. 4) subgaleal haematomas

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