Figure 10. CT and MRI images of lesions of a vascular aetiology. A 35-year-old man with rheumatic heart disease had undergone an open mitral commisurotomy 20 years earlier. A CT done for right-sided paresis of recent origin revealed multiple fluid levels within an amorphous focus of haemorrhage in the left parietal region. In the light of these findings, the bleed was thought to represent a haemorrhagic arterial infarct.