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Growth and development in thanatophoric dysplasia - an update 25 years later
Sarah M Nikkel1, Nathalie Major2, W James King2
1Department of Genetics Children's Hospital of Eastern Ontario Ottawa, Ontario, Canada ; Department of Pediatrics, University of Ottawa Ottawa, Ontario, Canada.
Insights
Thanatophoric dysplasia is usually fatal in newborns. Survivors face seizures, stenosis, ventilator needs, and developmental delays, requiring family awareness for management.
Area of Science:
- Medical Genetics
- Pediatric Neurology
- Neonatology
Background:
- Thanatophoric dysplasia (TD) is a severe skeletal disorder.
- It is characterized by extreme micromelia, a narrow thorax, and a large head.
- TD is typically lethal in the neonatal period.
Observation:
- Rare cases of TD survival present unique challenges.
- These individuals may develop neurological and developmental issues.
- Craniocervical stenosis is a significant concern.
Findings:
- Neonatal survivors of thanatophoric dysplasia can experience seizures.
- Progressive craniocervical stenosis is observed in survivors.
- Motor and cognitive limitations are common in these rare cases.
Implications:
- Early recognition of potential complications is crucial for survivors.
- Families require comprehensive counseling regarding long-term care needs.
- Management plans must address neurological, respiratory, and developmental support.
Key Clinical Message:
Thanatophoric dysplasia is typically a neonatal lethal condition. However, for those rare individuals who do survive, there is the development of seizures, progression of craniocervical stenosis, ventilator dependence, and limitations in motor and cognitive abilities. Families must be made aware of these issues during the discussion of management plans.
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