Omalu et al reported a contusion index to describe cerebral contusions at autopsy. This requires grading of contusion injuries in various lobes and regions of the brain. The authors are from the Allegheny County Coroner's Office and Abakaliki Teaching Hospital (Nigeria).
This is a modification of the grading schema of Adams et al.
Parameters:
(1) surface contusions
(2) maximum parenchyma depth of contusions
Parameter
Finding
Points
surface contusion
no contusion
0
1 gyri or 2 adjacent gyri on one surface of the lobe
1
much of 1 surface of the lobe
2
involve more than 1 surface of the lobe (extensive or focal)
3
parenchymal depth
no contusion
0
leptomeninges with subarachnoid hemorrhage
1
partial or full cortical thickness
2
involves interdigitating or immediate subcortical white matter
3
extends to deep or periventricular white matter
4
score for a lobe or region =
= (grade for surface) * (grade for parenchymal depth)
Interpretation:
• minimum score: 0
• maximum score: 12
To read more or access our algorithms and calculators, please log in or register.
