Selected clinical research involving the central nervous system

Area of Science:

• Neurology
• Clinical Genetics
• Developmental Biology

Background:

• Central nervous system (CNS) malformations present complex diagnostic challenges.
• Understanding the spectrum of anomalies associated with conditions like encephalocele and holoprosencephaly is crucial for clinical management.
• Apert syndrome and various genetic syndromes exhibit distinct patterns of CNS and craniofacial abnormalities.

Purpose of the Study:

• To update clinical research on CNS anomalies, focusing on encephalocele and holoprosencephaly.
• To elucidate the associations between encephalocele and specific craniofacial and genetic syndromes.
• To describe CNS findings in Apert syndrome and patterns of facial dysmorphism in holoprosencephaly.

Main Methods:

• Review and synthesis of clinical research projects on CNS disorders.
• Analysis of associations between encephalocele and conditions such as craniostenosis, frontonasal dysplasia, and oculo-auriculo-vertebral spectrum.
• Examination of neuropathologic findings and facial dysmorphism patterns in Apert syndrome and holoprosencephaly.

Main Results:

• Encephalocele is associated with craniostenosis, hypothalamic-pituitary dysfunction, oculo-auriculo-vertebral spectrum, and frontonasal dysplasia.
• In Apert syndrome, CNS studies reveal common distortion ventriculomegaly and a pattern of megalencephaly, gyral abnormalities, and defects in the corpus callosum and limbic structures.
• Holoprosencephaly exhibits characteristic facial dysmorphism patterns, with absent or single maxillary incisors being common in severe forms and microforms.

Conclusions:

• Specific associations and patterns of CNS malformations are identified for encephalocele and holoprosencephaly.
• Apert syndrome presents a recognizable pattern of CNS anomalies.
• Facial dysmorphism, particularly dental anomalies, can serve as key indicators for holoprosencephaly and its subtypes.