Lesions in the cerebral hemispheres after blunt head injury.

Though this paper is limited to lesions in the cerebral hemispheres after non-penetrating head injury, they are unlikely to be confined to the hemispheres, or to the brainstem for that matter. No attempt is made to deal with all the types of lesion which may occur, in particular those due to systemic factors, such. as fat embolism or anoxia and complications such as meningitis or epilepsy, are omitted. For further information the reader is referred to Tomlinson (1964) and Strich (1969). Although some lesions due to head injury can be seen with the naked eye, many important ones can be seen only with the microscope. Different lesions will be described under separate headings, but often occur in various combinations within the same brain.