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  • Title: Trigeminal neurinoma presenting with intratumoral hemorrhage: report of two cases.
    Author: Asari S, Tsuchida S, Fujiwara A, Yabuno N, Furuta T, Ohmoto T.
    Journal: Clin Neurol Neurosurg; 1992; 94(3):219-24. PubMed ID: 1327611.
    Abstract:
    We report 2 cases of trigeminal neurinoma presenting with spontaneous intratumoral hemorrhage. There are only 2 similar cases reported in the literature. Presenting symptoms were headache, diplopia, disturbed consciousness and trigeminal disturbance with sudden onset. CT scan showed a typical fluid-fluid level within low-density mass in the cerebellopontine angle in one case. On MRI, one case showed a typical fluid-fluid level on T2-weighted image and another one had mixed signal intensities including hyper- and hypointensities on both T1- and T2-weighted images. Histologically, increased vascularity, consisting of dilated and thin-walled vessels presenting telangiectatic or cavernous angiomatous appearances were observed in the specimens in both cases. The size of these tumors was about 3 cm each in diameter. Risk factors for hemorrhage appear to be large tumor size and increased vascularity.
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