Introduction
Pathophysiology
Clinical
Cavernomas in the midbrain
Investigations
Type Radiological findings Type 1 hyperintense on T1- and T2-weighted imaging due to a hemosiderin core from subacute haemorrhage. Type 2 loculated haemorrhages enveloped by gliotic tissue, presenting as a mixed signal on both T1 and T2 sequences. On T2 imaging, type II lesions also have a hypointense rim, resulting in the “popcorn” appearance Type 3 presence of an isointense core, indicating chronic resolved haemorrhage, typically seen in familial CM Type 4 small malformations that can only be seen in gradient recalled echo (GRE) MRI as hypointense foci and are thought to be capillary telangiectasias Management
References
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Cavernous angiomas (Cavernomas)
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