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Daily bibliographic review of the Neurosurgery Department. La Fe University Hospital. Valencia, Spain

Focused opening of the sylvian fissure for microsurgical management of MCA aneurysms

Focused opening of the sylvian fissure for microsurgical management of MCA aneurysms

Acta Neurochir (2014) 156:17–25

A wide sylvian opening, with either a proximal or distal start, has been standard for microsurgical management of middle cerebral artery (MCA) aneurysms. However, extensive sylvian dissection is potentially associated with increased incidence of iatrogenic injury to the brain and neurovascular structures. The aim of the present study was to describe the technique of focused opening of the sylvian fissure for microsurgical management of MCA aneurysms with additional tips on handling difficulties which may be encountered with this technique.

Method A 3D image-based anatomic orientation, clipping field–focused surgical planning, slack brain, and high magnification are the basic requirements for this approach. A 10– 15 mm sylvian opening is placed so that it allows safe access and a good surgical view of the MCA aneurysm clipping field. Under proximal control of the MCA, the aneurysm neck can be dissected and clipped effectively and safely, in this small surgical field.

Results The presented technique has been developed and refined by the senior author during the surgery of 1,097 aneurysms over the last 13 years. It has proved to be safe, and effective for clipping of both ruptured and unruptured MCA aneurysms. Its greatest advantages are a shorter operative time and less brain and vessel manipulation compared to more extensive approaches.

Conclusion The focused sylvian opening is a less-invasive alternative to the classical wide sylvian opening for the microsurgical management of most MCA aneurysms.

Category: Vascular

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