Cavum Septum Pellucidum in the General Pediatric Population and Its Relation to Surrounding Brain Structure Volumes,...

Area of Science:

• Neuroscience
• Developmental Biology
• Radiology

Background:

• The cavum septum pellucidum (CSP) is a fluid-filled space between the lateral ventricles, present in all neonates.
• Typically, the CSP closes within five months post-birth; persistence or enlargement has been anecdotally linked to psychiatric disorders.
• The clinical significance of a persistent or enlarged CSP in the general population remains unclear.

Purpose of the Study:

• To investigate the relationship between the cavum septum pellucidum (CSP) and brain structure volumes in children.
• To examine the association of CSP with cognitive function (nonverbal intelligence).
• To assess the link between CSP and emotional and behavioral problems in children.

Main Methods:

• Utilized data from the Generation R Study, a prospective cohort in Rotterdam, the Netherlands.
• Analyzed MR imaging of 1070 children (6-10 years old) for cavum septum pellucidum (CSP) presence and length.
• Defined enlarged CSP as a length ≥6 mm; compared brain volumes, intelligence, and behavioral outcomes across groups (no CSP, persistent CSP, enlarged CSP).

Main Results:

• Prevalence of cavum septum pellucidum (CSP) was 4.6% in the study sample.
• Children with enlarged CSP showed a larger corpus callosum, increased white matter-to-brain volume ratio, and smaller lateral ventricles.
• No significant association was found between cavum septum pellucidum (CSP) and cognitive function or emotional/behavioral problems.

Conclusions:

• The cavum septum pellucidum (CSP) represents a normal structural variation in the brain.
• In this population-based sample of school-aged children, CSP demonstrated no clinical implications.
• Findings suggest that a persistent or enlarged CSP does not negatively impact cognitive or behavioral outcomes.