latency and amplitude of f-wave failed to show any significant difference in patients compared with normal subjects both on affected sides , however , frequency of f-wave was found to be significantly higher on affected side except for 2 cases who had a mass lesion in occipital lobe in one case and the other was in the state of diaschisis due to recent hemorrhage in the parietal tumor .
C0577559
a mass
C0027651
tumor