Abstract
The infratentorial space is that region of the intracranial space including the posterior cranial fossa below the tentorium cerebella. The tentorium cerebella are an extension of the dura mater which separates the basal surface of the occipital lobe and temporal lobes from the cerebellum and brainstem. This region includes all of the brainstem with the exception of the superior portion of the mesencephalon, which extends through an opening in the tentorium. The tentorium is a rather rigid structure such that volume expansion above or below can lead to transtentorial herniation often noted clinically by pressure on the third cranial nerve and a dilated pupil (mydriasis) on the affected side.
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Malcharek, M.J., Schneider, G. (2012). Surgery for Infratentorial Mass. In: Koht, A., Sloan, T., Toleikis, J. (eds) Monitoring the Nervous System for Anesthesiologists and Other Health Care Professionals. Springer, Boston, MA. https://doi.org/10.1007/978-1-4614-0308-1_21
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DOI: https://doi.org/10.1007/978-1-4614-0308-1_21
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