Supratentorial High Convexity Intradural Extramedullary Cavernous Angioma : Case Report

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A 59-year-old man presented with a 2-month history of numbness in the lower left side of the face and upper left extremity. Axial T1-weighted magnetic resonance imaging showed a wedge-shaped mass measuring 3 × 2.5 cm in the right frontoparietal high convexity area that was heterogeneously enhanced after administration of gadolinium-diethylenetriaminepenta-acetic acid. Right frontoparietal craniotomy was performed and a bluish soft mass was found under the arachnoid membrane. The mass could be dissected free from the arachnoid membrane and the brain surface. Histological examination revealed the typical findings of cavernous angioma. Cavernous angioma should be considered in the differential diagnosis of supratentorial high convexity intradural extramedullary tumor, especially appearing as a heterogeneously enhanced mass adjacent to the brain parenchyma causing mass effect.
2010-04-15