Cerebral microbleeds are increasingly recognised as biomarkers of small vessel disease. Several preclinical and clinical studies have suggested that chronic disruption of the blood–brain barrier is one of the mechanisms for the development of cerebral microbleeds.
A 51-year-old man experienced two left parieto-occipital lobar intracerebral haemorrhages (ICHs) in the timespan of 2 years. Multiple microbleeds surrounding the two haemorrhages were found on MRI, but not at location distant from the haemorrhages. Ten months after the last haemorrhage, an MRI demonstrated a right occipital focus of contrast enhancement. Twenty months after the last ICH, a new cerebral microbleed had developed exactly at the location of the earlier contrast enhancement.
This case demonstrates that blood–brain barrier disruption may be an important factor preceding the development of cerebral microbleeds.
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