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Cavum Septi Pellucidi and Cavum Vergae in Normal and Developmentally Delayed Populations

Departments of Neurology and Pediatrics, West Virginia University, Morgantown, WV

G. Bradley Schaefer, MD

Munroe-Meyer Institute, University of Nebraska, Omaha, NE

Jennifer M. Craft, BS

Munroe-Meyer Institute, University of Nebraska, Omaha, NE

Recent studies have shown that the persistence of the cavum septi pellucidi beyond the neonatal period is a marker of cerebral dysgenesis. It has been suggested that the finding of a persistent cavum vergae is also a marker of disturbed brain development. In order to investigate this hypothesis we reviewed 161 brain magnetic resonance imaging scans from normal individuals for the presence of cavum septi pellucidi or cavum vergae, or both. In the 34 prospectively obtained normal adults, there were no individuals with either a cavum septi pellucidi or cavum vergae. In the "defined" normal subjects 3 of 127 individuals (2.4%) had a cavum septi pellucidi whereas a cavum vergae was noted in 26 of 127 (20.5%). We next reviewed the neuroimaging studies of 249 children and adults evaluated for mental retardation or developmental delay. A cavum septi pellucidi was found in 38 of 249 (15.3%) and a cavum vergae in 48 of 249 (19.3%) of these patients. A cavum septi pellucidi and cavum vergae were found together in 19 of 249 (7.6%). We interpret these data as showing that the cavum septi pellucidi is rarely seen in normal individuals although the cavum vergae is seen with the same frequency in normal and retarded populations. Thus we conclude that the cavum septi pellucidi serves as a significant marker of cerebral dysfunction manifested by neurodevelopmental abnormalities while the cavum vergae alone does not identify individuals at risk for cognitive delays. (J Child Neurol 1998;13:120-121).

Journal of Child Neurology, Vol. 13, No. 3, 120-121 (1998)
DOI: 10.1177/088307389801300305


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