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Small round cell tumors of bone
1Surgical Pathology, UMDNJ-New Jersey Medical School, Newark, NJ 07103, USA. hameedmr@umdnj.edu
Archives of Pathology & Laboratory Medicine
|February 8, 2007
Summary
Primary small round cell tumors of the bone, including Ewing sarcoma family tumors, are diverse neoplasms in children and adolescents. Accurate diagnosis relies on clinicopathologic, immunohistochemical, and genetic studies for better understanding and prognosis.
Area of Science:
- Oncology
- Pathology
- Genetics
Background:
- Primary small round cell tumors of the bone are a diverse group of malignant neoplasms primarily affecting children and adolescents.
- These tumors include Ewing sarcoma/peripheral neuroectodermal tumor (Ewing family tumors), lymphoma, mesenchymal chondrosarcoma, and small cell osteosarcoma.
- Despite morphological similarities, unique biological and genetic features offer insights into their distinct pathologies.
Purpose of the Study:
- To present a comprehensive overview of the clinical, radiologic, pathologic, and genetic characteristics of primary small round cell tumors of the bone.
- To review relevant literature concerning these rare bone neoplasms.
- To incorporate findings from rare cases and author's subspecialty experience.
Main Methods:
- A systematic literature search was conducted using PubMed and Ovid MEDLINE databases.
- Data were extracted from articles focusing on clinicopathologic, biological, and genetic findings.
- Inclusion of rare case findings from author's subspecialty experience.
Main Results:
- Small round cell tumors of the bone exhibit significant heterogeneity in their clinical presentation, imaging findings, and pathological features.
- Immunohistochemical and genetic analyses are crucial for differentiating these entities and understanding their specific molecular underpinnings.
- Ewing sarcoma family tumors, lymphoma, mesenchymal chondrosarcoma, and small cell osteosarcoma represent distinct diagnostic entities within this group.
Conclusions:
- Accurate diagnosis of small round cell bone tumors is achievable through integrated clinicopathologic criteria and a panel of immunohistochemical and genetic studies.
- Molecular genetic studies are instrumental in elucidating the biology, histogenesis, and prognostic factors of these tumors.
- This comprehensive approach aids in precise diagnosis and informs therapeutic strategies for patients with small round cell bone tumors.
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