Skull Base Surgery of the Posterior Fossa
140 Fig. 10.4 With this same exposure, the jugular foramen can be seen. Inspection of the superior portion of the tumor allows v ...
Fig. 10.6 Debulking of the tumor can be performed using sharp dissection. An ultrasonic aspirator may also be used, but this mus ...
142 existing cranial nerve deficits [ 22 ]. Lower cranial nerve palsies are the most commonly observed postoperative deficit, al ...
143 Samii M, Klekamp J, Carvalho G. Surgical results for meningiomas of the craniocervical junction. Neurosurgery. 1996;39(6):1 ...
© Springer International Publishing AG 2018 145 W.T. Couldwell (ed.), Skull Base Surgery of the Posterior Fossa, https://doi.org ...
146 Surgical Technique The steps of the retrosigmoid technique for hear- ing preservation are illustrated in Fig. 11.1, and thos ...
147 catheter are placed, and pillows are positioned between the legs. For all surgeries in the posterior fossa, we use a total i ...
148 Fig. 11.2 (continued) G. Alzhrani et al. ...
149 then debulk the center of the tumor. The amount of removal of the interior aspect of the tumor is deter- mined by the size o ...
150 Surgical Risks and Complications The reported mortality rate for retrosigmoid approach for VS is 0.3% [ 1 ]. Morbidities inc ...
151 carotid artery is apparent with only a very thin or no bony covering [ 21 , 33 ]. The posterior part of the middle fossa flo ...
152 acusticus in a lateral-to-medial direction [ 12 ]. The Fisch technique exposes the blue line of the SSC, and the IAC plane i ...
153 Fig. 11.5 (continued) 11 Vestibular Schwannomas ...
154 Fig. 11.5 (continued) Intraoperative photographs show- ing a right middle fossa approach for an intracanalicular tumor with ...
155 made down to the galea. This is followed by opening the temporalis fascia and muscle using a monopolar cautery down to the b ...
156 the area of the porus acusticus and the CSF is allowed to egress, more brain relaxation and bet- ter middle fossa retraction ...
157 ridor is narrow. Tumors with significant burden in the cisternal space of the CPA are difficult to remove. Furthermore, the ...
158 facial nerve under the dura. The tumor is followed laterally, and the vestibular nerve is identified pos- terior to Bill’s b ...
159 tion. As the tumor is dissected, the redundant capsule can be debulked more with microscissors or an ultrasonic aspirator. T ...
160 Fig. 11.8 (Continued) G. Alzhrani et al. ...
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