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Multiple fractures in a 3-month-old infant with severe infantile osteopetrosis
O A Bodamer1, R M Bravermann, W J Craigen
1Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA. obodamer@yahoo.com
Journal of Paediatrics and Child Health
|March 12, 2002
Insights
Severe infantile osteopetrosis (I-ARO) was diagnosed in an infant presenting with multiple fractures, an uncommon occurrence. Carbonic-anhydrase II deficiency was ruled out as the cause.
Area of Science:
- Genetics and Molecular Biology
- Pediatric Radiology
- Skeletal Dysplasias
Background:
- Autosomal recessive osteopetrosis (ARO) is a rare genetic disorder affecting bone resorption.
- Infantile forms (I-ARO) typically present with severe symptoms within the first year of life.
- Characteristic radiological and histological findings aid in diagnosis.
Observation:
- A 3-month-old female infant was diagnosed with severe infantile, autosomal recessive osteopetrosis (I-ARO).
- The infant presented with multiple fractures, which is a highly unusual clinical manifestation for I-ARO.
- Diagnostic workup excluded carbonic-anhydrase type II deficiency.
Findings:
- The diagnosis of severe I-ARO was confirmed through characteristic radiological and histological evidence.
- The presence of multiple fractures at initial presentation in this infant is a significant and atypical finding.
- Genetic testing ruled out carbonic-anhydrase type II deficiency as the underlying cause.
Implications:
- This case highlights the variability in clinical presentation of infantile osteopetrosis.
- Understanding atypical presentations is crucial for accurate and timely diagnosis in pediatric skeletal disorders.
- Further research may elucidate the specific genetic or molecular factors contributing to fracture susceptibility in I-ARO.
Abstract:
A diagnosis of severe infantile, autosomal recessive osteopetrosis (I-ARO) was made in a 3-month-old female based on characteristic radiological and histological findings. The finding of multiple fractures at presentation in this infant is highly unusual. Deficiency of carbonic-anhydrase type II was excluded.