Page 10 - SONO 260 The Fetal Head and Brain
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The Cavum Septum Pellucidum
¢The cavum septum pellucidum (CSP) is a midline brain structure that can be identified in the anterior portion of the brain between the frontal horns of the lateral ventricles.
It will appear as an anechoic “box-shaped” structure in the axial scan plane .
Although the CSP should always be seen between 18 and 37 weeks, the closure of this structure is normal in later gestation and often occurs before birth or shortly thereafter.
The cavum septum pellucidum does not communicate with the ventricular system and its absence is associated with multiple cerebral malformations.
