It's impossible to accurately comment on an MRI that I have not personally reviewed. However, it's likely that the "
hematomaBefore and after hematoma repair
Bruise
Chronic subdural hematoma
Extradural hemorrhage
Subdural hematoma
Subdural hematoma " you speak of around the angioma is really a hemosiderin ring surrounding the lesion. Hemosiderin is a breakdown product of blood that is often seen around brain abnormalities that have bled such as a cavernous malformation. It represents a natural stage of blood resolution within the brain and is depicted on MRI sometimes as a ring around a cavernous malformation. Hope that helps.