Table 4. Features of TOAST Classification of Subtypes of Ischemic stroke.
| Features | Subtype | |||
| Large-artery atherosclerosis | Cardioembolism | Small-artery occlusion | other cause | |
| Clinical | ||||
| Cortical or cerebeller dysfunction | + | + | - | +/- |
| Lacunar sydrome | - | - | + | +/- |
| Imaging | ||||
| Cortical, cerebeller, brain-stem, or subcortical infarct>1.5cm | + | + | - | +/- |
| Brain-stem, or subcortical infarct<1.5cm | - | - | +/- | +/- |
| Tests | ||||
| Stenosis of extracranial internal carotid artery | + | - | - | - |
| Cardiac source of embolism | - | + | - | - |
| Other abnormality on tests | - | - | - | + |