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Retromastoid excision of Acoustic neuroma- (sitting position): |
| Dr. M.C. Vasudevan, |
| Neurosurgeon, V.H.S Medical center, Chennai, India. . |
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Clip1:
Following retromastoid craniectomy, the dura is opened and the cisterna magna is punctured to drain the CSF.This exposes the lower cranial nerves, which needs to be protected. |
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Clip2:
Archnoidal dissection over the tumor; and tumor debulking is carried out. CUSA helps. |
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Clip3: Posterior wall of the int. auditory meatus is drilled out and the facial nerve is identified to facilitate preservation. The tumor is dissected away laterally. |
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Clip4:
The tumor is dissected away medially; continuation of the facial nerve is visualized.
Intact facial nerve demonstrated after total tumor excision. |
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