Related Experiment Video
Updated: May 31, 2026

Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma
Published on: October 14, 2016
[Clinical characteristics of osteopetrosis in 4 children]
1Department of Pediatrics, Xiangya Hospital, Central South University, Changsha 410008, China.
Insights
Autosomal recessive osteopetrosis is a rare genetic disorder causing dense bones and bone marrow failure in children. Hematopoietic stem cell transplantation offers the best survival chance for severe cases.
Area of Science:
- Pediatrics
- Genetics
- Hematology
Background:
- Osteopetrosis is a group of rare, inherited skeletal disorders.
- Characterized by increased bone density on radiographs.
Observation:
- Four boys (2 months to 8 years) diagnosed with autosomal recessive osteopetrosis.
- Symptoms included anemia, thrombocytopenia, hepatosplenomegaly, failure to thrive, infections, and macrocephaly.
- Radiological findings: diffuse sclerosis, metaphyseal defects, 'bone-in-bone', 'sandwich' vertebrae.
Findings:
- Bone marrow biopsy revealed markedly reduced platelets.
- Diffuse sclerosis crowds bone marrow, leading to anemia and extramedullary hemopoiesis.
Implications:
- Early diagnosis and intervention are crucial for managing symptoms.
- Hematopoietic stem cell transplantation is the primary treatment for severe forms.
- This treatment offers the best chance for long-term survival in affected children.
Abstract:
Four boys (2 months to 8 years old) were diagnosed with autosomal recessive form of osteopetrosis. Symptoms manifested in the first few months of life in 3 patients, and there was family history in 1. Primary symptoms included anemia, thrombocytopenia, hepatosplenomegaly, failure to thrive, recurrent infectious history and macrocephaly. The typical radiological images on plain radiogram were diffuse sclerosis, bone modelling defects at the metaphyses of long bones, "bone-in-bone" appearance, and "sandwich" vertebrae. Bone marrow biopsy showed markedly reduced platelets. Osteopetrosis refers to a group of rare, heritable disorders of the skeleton characterized by increased bone density on radiographs. Diffuse sclerosis leads to crowding of the bone marrow, resulting in anemia and extramedullary hemopoiesis. Hematopoietic stem cell transplantation is employed for the most severe forms associated with bone marrow failure and offers the best chance of longer-term survival.
Related Concept Videos
Bone Disorders
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations
Osteoclasts in Bone Remodeling
Chronic Kidney Disease II: Clinical Manifestations
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations
Pharmacokinetics in Pediatric Patients: Drug Metabolism