Ependymal variations in the caudal spinal cord

Area of Science:

• Neuroscience
• Developmental Biology
• Pathology

Background:

• The lumbosacral spinal cord and cauda equina are critical structures in infant development.
• Understanding normal and abnormal findings in this region is essential for diagnosing congenital anomalies.

Purpose of the Study:

• To investigate the occurrence and characteristics of ependymal cell structures in the lumbosacral spinal cord of near-term infants.
• To determine if these findings are associated with neural tube defects or other pathological conditions.

Main Methods:

• Examination of the lumbosacral spinal cord, including the cauda equina, from 100 unselected autopsied infants who died at or near term.
• Histological analysis to identify and characterize ependymal cell collections and central canal morphology.

Main Results:

• Bilateral ependymal cell collections on the lumbosacral cord surface were observed in 10% of cases.
• A forked or duplicate central canal was found in 25% of cases.
• These ependymal findings were not associated with evidence of defective neural tube closure, spina bifida, or abnormal central canal length.

Conclusions:

• The observed ependymal cell structures in the infant lumbosacral spinal cord appear to be relatively common findings.
• These lesions are not indicative of neural tube closure defects or associated neurological disturbances.
• The pathogenesis and potential relationship of these ependymal collections to caudal spinal cord ependymomas warrant further investigation.