Pilz P
Acta Neurochir Suppl (Wien). 1983;32:119-23. doi: 10.1007/978-3-7091-4147-2_17.
A histological analysis of 324 unselected fatal head injuries disclosed axonal injury in the form of retraction balls in 100 cases: this was severe in 64 and mild in 36. It is suggested that axonal injury exists as a spectrum without there necessarily being selective involvement of the corpus callosum or the rostral brain stem, and that cases with mild axonal injury may be unconscious for only a short time after their injury.