Probable cerebral amyloid angiopathy diagnosed on plain CT
Cerebral amyloid angiopathy (CAA) is the most common cause for lobar haemorrhages. The prevalence of CAA is believed to be app. 30% in non-demented elderly patients and increases with age [1]. CAA is diagnosed using the modified Boston criteria [2] which relies heavily on neuroimaging. Recently, the imaging signs “finger like projections” (FLP) and subarachnoid haemorrhage (SAH) adjacent to the main haemorrhage have been suggested as additional markers of CAA [3]. While MRI is desirable to advance the diagnosis of CAA non-invasively, in some patients, MRI is not feasible due to contraindications or logistics constraints. Moreover, plain CT remains the first-line imaging modality in the acute stage. We present a retrospectively compiled case series of patients with lobar haemorrhages in whom an MRI was not performed but many imaging features hinted towards the diagnosis of cerebral amyloid angiopathy on plain CT.
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