Before revision: It is found in the frontal (FIRDA) or occipital (OIRDA ) areas of the brain and can be caused by a number of different reasons, some benign, unknown reasons, but also are commonly associated with lesions, tumors, and encephalopathies.
After revision: It is found in the frontal (FIRDA) ,) or temporal (TIRDA occipital (OIRDA ) areas of the brain and can be caused by a number of different reasons, some benign, unknown reasons, but also are commonly associated with lesions, tumors, and encephalopathies.