The modified retrosigmoid approach: a how I do it
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The traditional retrosigmoid (RS) approach provides limited exposure of the inferior compartment of the CPA, while radical skull base approaches are demanding and associated with significant morbidity.
This study outlines the relevant surgical anatomy and the different surgical steps of a modified retrosigmoid (MRS) approach.
The MRS provides enhanced exposure of the CPA and deep vascular structures resulting from a modified RS craniotomy and limited exposure of the sigmoid sinus.
In selected posterior fossa lesions, this cisternal approach is a straightforward corridor that can be routinely performed as a safe alternative to radical cranial base approaches.
KeywordsLower cranial nerves tumor Modified retrosigmoid approach Proximal PICA aneurysm Skull base surgery
Modified retrosigmoid approach
Postero-inferior cerebellar artery
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest. The manuscript has not been previously published in whole or in part or submitted elsewhere for review.
The patient has consented to the submission of this How I Do It for submission to the journal.
- 2.Quinones-Hinojosa A, Chang EF, Lawton MT (2006) The extended retrosigmoid approach: an alternative to radical cranial base approaches for posterior fossa lesions. Neurosurgery 58:ONS-208–ONS-214 discussion ONS-214Google Scholar