Iron in cicatrix and abnormal CT findings in a patient with posttraumatic epilepsy.

A 33-year-old male patient showed increasing frequency of seizures 12 years after a blunt head injury. From findings of x-ray computed tomography, the lesion was thought to be a benign glioma. Removal of the lesion was performed with the guidance of electrocorticography. Histological diagnosis was gliotic scar with calcification. Diffuse iron particles were detected in layers II-V of the cortex by hematoxylin and Berlin-Blue stain. These findings suggest progressing traumatic epilepsy which may be explained by the mechanism of Willmore's model.