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Parosteal osteosarcoma of the scapula
1Department of Pathology, College of Medicine, Kyung Hee University, Seoul, Korea. damia@chollian.net
Journal of Korean Medical Science
|November 27, 1999
Summary
Parosteal osteosarcoma, a rare bone surface tumor, was identified in the scapula of a young man. This case highlights an extremely unusual location for this low-grade osteosarcoma.
Area of Science:
- Orthopedic Oncology
- Skeletal Radiology
- Bone Pathology
Background:
- Parosteal osteosarcoma is a low-grade malignant bone tumor arising from the bone surface.
- It typically presents in long bones, making scapular involvement exceptionally rare.
Observation:
- A 21-year-old male presented with a parosteal osteosarcoma of the scapula.
- Radiography revealed a well-defined, radiodense lesion on the scapular surface.
- CT confirmed an intact cortex and no medullary invasion, with a lobulated, high-density mass.
Findings:
- Histological examination showed a well-differentiated osteosarcoma.
- The tumor comprised hypocellular spindle cells with minimal atypia.
- Well-formed bony trabeculae and occasional cartilaginous caps were noted.
Implications:
- This case underscores the importance of considering parosteal osteosarcoma in rare skeletal locations.
- Accurate radiological and histological assessment is crucial for diagnosis and management.
- Understanding the varied presentations aids in improving diagnostic accuracy for bone tumors.