ABSTRACT
This chapter stresses that the localisations presented are approximate, due to individual variations in brain anatomy and size, partial CT studies in some cases, and other factors. The scan is made at an angle of approximately 15° beneath the orbitomeatal (OM) line. On day 20, the CT examination shows an area of hypodensity mainly localised in the cortex and white matter of the middle temporal gyrus. Some extension to the superior temporal gyrus is possible. The scan is made at an angle of 15° inferior to the orbitomeatal line. Cuts are made at 1-cm intervals. The sequence of scans is consistent with a haemorrhagic stroke, with residual necrosis in the temporo-parietal cortex and adjacent white matter. The lesion extends inferiorly to the cuts presented. Surface dyslexia occurs with a wide variety of lesion types and lesion sites. The lesions seen on these scans include tumour, head trauma, stroke, and probably degenerative disease.
