Statistics from Altmetric.com
A 53-year-old right-handed woman developed left pulsatile tinnitus. One year later she presented with a severe occipital headache with neck stiffness while defecating. On admission to hospital she was normotensive (blood pressure 120/70 mm Hg), with a Glasgow coma scale score of 15/15. Examination showed meningism but no focal features.
CT scan of head showed a linear periventricular haemorrhage, centred upon the posterior aspect of the corpus callosum (figure 1A) with intraventricular haemorrhage. An MR scan of the brain 1 year before (when she had presented with left pulsatile tinnitus) had shown left internal carotid artery occlusion (figure 1B) and left hemisphere signal change, consistent with a watershed infarction (figure 1C). The same MR scan also showed extensive collateralisation from the left internal carotid artery occlusion, including prominent vessels in the corpus callosum (figure 1D).
A CT …