Morphological spectrum of prenatal cerebellar disruptions

Area of Science:

• Neuroscience
• Radiology
• Developmental Biology

Background:

• The cerebellum is vulnerable to prenatal insults like infections and hemorrhages, particularly in extremely preterm infants.
• Hypoxic-ischaemic injuries are not a primary cause of cerebellar disruption in the perinatal or postnatal periods.
• Prenatal disruptive events can manifest in diverse cerebellar morphologies.

Purpose of the Study:

• To describe and illustrate the spectrum of prenatal cerebellar disruptions based on imaging findings.
• To discuss the neuroradiological characteristics, potential causes, and clinical implications of these disruptions.
• To emphasize the importance of recognizing cerebellar disruptions and distinguishing them from malformations.

Main Methods:

• Review and illustration of imaging appearances of various prenatal cerebellar disruptions.
• Discussion of neuroradiological patterns, associated disruptive events, and clinical findings.
• Analysis of the relationship between disruptive agents and resulting morphological patterns.

Main Results:

• A spectrum of prenatal cerebellar disruptions is identified, including agenesis, unilateral hypoplasia, clefts, global hypoplasia, vanishing cerebellum in myelomeningocele, and preterm infant developmental disruption.
• Different neuroradiological patterns can arise from the same disruptive agent, suggesting a morphological spectrum.
• Imaging pattern analysis is crucial for identifying cerebellar disruptions.

Conclusions:

• Prenatal disruptive events lead to a spectrum of cerebellar abnormalities identifiable through neuroimaging.
• Distinguishing cerebellar disruptions from malformations is vital for diagnosis, prognosis, and genetic counseling.
• Understanding these imaging patterns aids in managing infants with suspected prenatal cerebellar injury.