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Fig. 1 | BMC Surgery

Fig. 1

From: Analysis of the efficacy of microdissection of paravebous sinus meningiomas invading large venous sinuses

Fig. 1

Classification of meningiomas according to the type of invasion of the sinus: type I, meningioma attached to the external surface of the sinus wall; type II, lateral recess invaded; type III, ipsilateral wall invaded; type IV, both ipsilateral wall and sinus apex invaded; type V, sinus completely occluded but contralateral wall not invaded; type VI, sinus completely invaded and contralateral wall invaded

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BMC Surgery

ISSN: 1471-2482

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