cctpat8

F: Left-sided frontoparietal "white" (hyperdense) flat area and mass effect and midline shift and ventricle compression

H: Adult man, 42-years-old, blow to the head about three hour ago. Coma

INFO/WWW-LINKS: The chronic haematoma is hypodense (= low attenuation) compared with the adjacent brain.
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

D: At brain windows evidence of acute left-sided frontoparietal subdural haematoma with typical crescentic shape. Compression of both ventricles and midline shift

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