Cerebral cavernous haemangioma
Headache and seizures.
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A left frontal pop-corn like 2.5 x 2 cm mass lesion is hyperintense on T1 and T2 sequences. This is compatible with methaemaglobin. There is a thick hypointense coat on all pulse sequences, more apparent on T2. Blooming on the gradient echo sequences is compatible with haemosidrin.
No perilesional oedema or significant mass effect.
Typical appearances of a large left frontal cavernous haemangioma.