Skull Base Surgery of the Posterior Fossa
120 Fig. 9.4 Case 3. Preoperative axial (a) and coronal (b) T1-weighted magnetic resonance images with gadolinium showing the le ...
121 Fig. 9.4 (continued) 9 Tentorial Meningiomas ...
12 2 Fig. 9.5 Case 4. Preoperative axial (a) and coronal (b) T1-weighted magnetic resonance images with gadolinium showing the l ...
12 3 Fig. 9.5 (continued) 9 Tentorial Meningiomas ...
124 Fig. 9.6 Illustration demonstrating the type of tumor by location. A tumor located over the vein of Galen and com- pressing ...
12 5 tumor from surrounding collateral veins and brain stem is relatively difficult technically. Resection of the tumor in such ...
Fig. 9.7 Case 5. Preoperative axial (a), coronal (b), and sagittal (c) T1-weighted magnetic resonance images with gadolinium sho ...
127 Fig. 9.7 (continued) The tumor is exposed via a left pos- terior interhemi spheric approach (h), and the tentorium is cut (i ...
128 Case 7: Combined Presigmoid and Retrosigmoid Approach with Resection of Tumor Invading the Sigmoid Sinus (Fig. 9.9) A 35-yea ...
129 Aggressive resection is contraindicated for meningiomas located at the posterior tentorial region invading the sinus partial ...
130 Fig. 9.9 (continued) H. Morisako et al. ...
131 Fig. 9.10 Case 8. Preoperative axial (a) and coronal (b) T1-weighted magnetic resonance images with gadolinium showing the p ...
132 Fig. 9.11 Case 9. Preoperative axial (a) and sagittal (b) T1-weighted magnetic resonance images with gadolinium showing the ...
133 Fig. 9.11 (continued) 9 Tentorial Meningiomas ...
13 4 Conclusions Surgical difficulty is related to tumor location. Incisural lesions require a skull base approach. Falcotentor ...
© Springer International Publishing AG 2018 135 W.T. Couldwell (ed.), Skull Base Surgery of the Posterior Fossa, https://doi.org ...
136 in 1986 for the treatment of lesions of the verte- brobasilar system [ 13 ]. A similar technique was then described in 1988 ...
137 plane of the dentate ligament, a midline posterior approach is indicated. Midline anterior tumors without significant spinal ...
138 resection are achieved. Similar to the case with tuberculum sella meningiomas, the dural tails, not well appreciated on preo ...
139 Fig. 10.2 Intraoperative photograph during resection of a FMM (patient shown in Fig. 10.1) from the right side. At the super ...
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