ABSTRACT
Background: There are numerous causes of epilepsy. A neuroimaging study should be done to exclude a structural brain abnormality. The present study was undertaken to find the role of Computed Tomography (CT) scan in patients presenting to our hospital with seizure disorders. Methods: Adult patients who presented to our hospital with history of seizures underwent non-contrast CT scan. Assessment of a radiologist were noted. Results: A total of 90 patients were included, 51% had Simple Partial Seizure (SPS), 21% had Complex Partial Seizure and 28% had Generalized Tonic Clonic (GTC) type. No abnormality was found in 37.8% of the patients. Space occupying lesions were diagnosed in 24.4% of the patients, vascular lesions in eight patients, gliosis and encephalitis in seven patients each, tumours and trauma related lesions in six and four patients respectively. Half of all SPS were localised to the frontal lobe. CPS were similarly distributed in the frontal and occipital, had more than one lobe involvement and included bilateral cerebral hemispheres. GTC more commonly involved occipital lobe than frontal or parietal lobe. More than one lobe involvement or bilateral cerebral hemispheres were most common in GTC, as compared to SPS or CPS. Space occupying lesions manifested mainly as SPS or CPS, and none as GTC. Vascular lesions presented as partial seizures only. In those with a normal CT appearance, SPS was most common. Conclusions: CT scan provides an easier and cheaper means to diagnose a number of organic lesions which may cause seizure disorders