Clival defect [Neurosurgery Wiki]

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=====Clival defect=====
Reconstruction of large clival defects after an [[endoscopic endonasal approach]] is challenging. 

A Extended nasoseptal flap, which adds the nasal floor and inferior meatus mucosa adds a significant area for reconstruction of the clivus. A defect laterally beyond the hypoglossal canals is not likely covered with this variation of the flap. Preoperative CT scans are useful to guide the reconstruction techniques
((Peris-Celda M, Pinheiro-Neto CD, Funaki T, Fernandez-Miranda JC, Gardner P,
Snyderman C, Rhoton AL. The extended nasoseptal flap for skull base
reconstruction of the clival region: an anatomical and radiological study. J
Neurol Surg B Skull Base. 2013 Dec;74(6):369-85. doi: 10.1055/s-0033-1347368.
Epub 2013 Jun 17. PubMed PMID: 24436940; PubMed Central PMCID: PMC3836807.)).