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Medical Term:

cavity of septum pellucidum


Definition: a slitlike, fluid-filled space of variable width between the left and right transparent septa, which occurs in fewer than 10% of human brains and may communicate with the third ventricle.

Synonym(s): cavum septum pellucidumTA, Duncan ventricle, fifth ventricle, pseudocele, pseudoventricle, sylvian ventricle, ventricle of Sylvius, ventriculus quintus, Vieussens ventricle, Wenzel ventricle