Fig. 5
From: Paediatric brainstem: A comprehensive review of pathologies on MR imaging
A 16-year-old patient with acute onset headache: a Susceptibility-weighted image shows prominent blooming in the pons (arrow). b T1-weighted images show heterogeneous areas of mixed hyper- and hypointensity consistent with blood degradation products giving a “popcorn appearance.” c Heterogeneous lesion with a prominent haemosiderin rim (dotted arrow) in keeping with cavernoma. There is an associated subacute haemorrhage in the superior aspect of the lesion