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Hyperphosphatasemia: report of three cases
A Bonakdarpour1, C Maldjian, S Weiss
1Department of Diagnostic Imaging, Temple University Hospital, Philadelphia, PA 19140, USA.
European Journal of Radiology
|August 10, 2000
Summary
Hyperphosphatasemia, a congenital bone dysplasia, presents with diagnostic skeletal abnormalities in early childhood. Radiographic findings mimic Paget's disease, aiding in diagnosis.
Area of Science:
- Medical Imaging
- Genetics
- Pediatrics
Background:
- Hyperphosphatasemia is a rare congenital bone dysplasia.
- Its skeletal manifestations can be mistaken for Paget's disease due to similar biochemical markers and radiographic features.
Observation:
- This study details radiographic findings in three pediatric cases of hyperphosphatasemia.
- Clinical presentation includes skull deformity, delayed weight-bearing, and limb bowing.
Findings:
- Key radiographic features include long bone bowing, cortical thickening, osteopenia, coarsened trabeculae, medullary expansion, and calvarial thickening.
- Histological analysis reveals absent lamellar bone and haversian systems, thick osteoid, and increased osteoclasts.
Implications:
- Accurate radiographic identification is crucial for diagnosing hyperphosphatasemia.
- Understanding these features aids in differentiating it from other bone disorders like Paget's disease.
- Further research into its genetic basis (autosomal recessive or dominant) is warranted.