Infantile or malignant osteopetrosis: case report of two siblings

Area of Science:

• Pediatric Genetics
• Skeletal Dysplasias
• Congenital Disorders

Background:

• Malignant osteopetrosis is a rare congenital disorder characterized by defective bone resorption.
• The condition arises from the failure of osteoclasts, leading to the accumulation of immature bone.
• Severe infantile forms manifest early in life, presenting significant health challenges.

Purpose of the Study:

• To report a case series of two siblings diagnosed with malignant osteopetrosis.
• To describe the prominent clinical manifestations observed in these affected individuals.
• To contribute to the understanding of familial cases of this rare skeletal dysplasia.

Main Methods:

• Clinical case reporting.
• Observation of presenting symptoms and disease progression in affected siblings.
• Review of diagnostic features associated with infantile malignant osteopetrosis.

Main Results:

• Two siblings presented with malignant osteopetrosis.
• Key clinical features included marked pallor, noisy respiration, progressive blindness, and developmental delay.
• These findings are consistent with severe, early-onset osteopetrosis.

Conclusions:

• This case highlights the occurrence of malignant osteopetrosis in siblings, suggesting a potential genetic component.
• The described clinical features underscore the severity and systemic impact of the disorder.
• Early recognition and management are crucial for improving outcomes in affected children.