Hemangioblastoma (WHO grade I)

A cerebellar mass lesion is seen on the axial T2-weighted scan, with mild accompanying vasogenic edema. A distinctive additional finding is the many prominent associated vascular structures (flow voids). TOF MRA performed with contrast administration reveals a highly vascular lesion, with prominent early enhancement, and tortuous feeding vessels both anteriorly and posteriorly. There is prominent homogeneous enhancement on the coronal post-contrast T1-weighted scan. DSA reveals a vascular mass, with prolonged staining (confirmed by later temporal series images), and A-V shunting.

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Part of the on-line supplement to Neuroradiology – The Essentials with MR and CT (© 2015)