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Cranio-osteoarthropathy: a rare variant of hypertrophic osteoarthropathy
1Department of Medicine, The Children's Hospital of Zhejiang University School of Medicine, 57 Zhugan Xiang, 310003, Hangzhou, China.
Insights
Cranio-osteoarthropathy is a rare genetic disorder characterized by digital clubbing and bone abnormalities. Early diagnosis is crucial for managing this condition, potentially linked to autosomal-recessive inheritance.
Area of Science:
- Genetics
- Pediatrics
- Radiology
Background:
- Cranio-osteoarthropathy is an extremely rare condition.
- Understanding its clinical presentation and diagnostic markers is essential.
Observation:
- A case report details a 2.3-year-old child with progressive digital swelling since 5 months of age.
- Clinical findings included digital clubbing, joint laxity, large nails, and mild genu valgum.
- Radiographic evidence revealed wormian bones, patent fontanels, periostosis, wide long bone diaphyses, and tibial curvature.
Findings:
- The study highlights key clinical and radiographic features for diagnosing cranio-osteoarthropathy.
- Periosteal new bone formation and decreased neurocranium ossification are significant indicators.
- Autosomal-recessive inheritance is a potential mode of transmission.
Implications:
- This rare disease requires consideration in pediatric patients presenting with specific digital and skeletal anomalies.
- Further research into cranio-osteoarthropathy can improve diagnostic accuracy and patient outcomes.
- Genetic counseling may be beneficial for families with a history of consanguinity.
Aim:
To highlight the clinical features and diagnosis of cranio-osteoarthropathy, an extremely rare disease.
Methods:
Case report and literature review.
Result:
A 2.3-year-old child presented with mild swelling of his distal phalanges at the age of 5 months that became pronounced gradually. His parents were consanguineous and his 14-year-old sister had albinism. Physical examination showed normal height and weight. A mild prominent nose, patent cranial sutures and anterior and posterior fontanel, clubbing of the digits without cyanosis, finger joint laxity, large nails, and mild knock-knee were noted. Radiographs showed wormian bones, patent cranial sutures, anterior and posterior fontanels, periostosis and wide diaphyses of long bone, abnormal curvature tibia.
Conclusion:
Cranio-osteoarthropathy is an extremely rare occurrence and may be an autosomal-recessive inheritance. This diagnosis should be considered while a patient presented digital clubbing, periosteal new bone formation and decreased neurocranium ossification.
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