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  • Title: Tentorial cavernous angioma with profuse bleeding. Case report.
    Author: Mori H, Koike T, Endo S, Takii Y, Uzuka T, Takahashi H, Ito J, Tanaka R.
    Journal: J Neurosurg Pediatr; 2009 Jan; 3(1):37-40. PubMed ID: 19119902.
    Abstract:
    This 15-year-old boy with a tentorial cavernous angioma reported occasional headache and scintillation in his left visual field. Magnetic resonance imaging revealed a well-demarcated, homogeneously enhanced tumor originating from the right cerebellar tentorium and extending into both the supratentorial and infratentorial spaces. Although a meningioma was suspected, vertebral artery angiography revealed a thickened meningeal branch originating from the right posterior inferior cerebellar artery and flecked tumor stain with pooling of contrast medium until the late venous phase. A cavernous angioma of the tentorium was suspected based on this finding, and as expected from the radiological findings, profuse bleeding was encountered during tumor removal. The histological diagnosis was a cavernous angioma. A cavernous angioma of the tentorium is extremely rare but should be differentiated from a meningioma preoperatively given that a cavernous angioma of dural origin tends to bleed massively during removal.
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