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Supratentorial Cavernous Malformation

Last Updated: September 28, 2018

Insular Cavernous Malformation:  Principles of Resection

Cavernous malformations (CMs) occur in the same relative proportions as the central nervous system (CNS) tissue volume, with 80% within the supratentorial space.

Many supratentorial lesions are found incidentally on magnetic resonance (MR) imaging before the patient develops clinical symptoms. They are frequently located within the cortical or subcortical regions adjacent to eloquent areas. Only about 5% of supratentorial CMs occur deep in the thalamus or hypothalamus.

Improvements in intraoperative image guidance and the development of innovative operative corridors associated with minimal transgression or retraction of normal neurovascular structures have allowed more effective excision of deep CMs and expanded the operative i...