Match the following primary bone lesions with their most characteristic clinical presentation and radiographic features.
- OsteosarcomaMetaphyseal malignancy associated with a 'sunburst' periosteal reaction and Codman triangle, most common in male adolescents.
- Ewing sarcomaDiaphyseal malignancy presenting with localized pain, fever, and an 'onion-skin' lamellated periosteal reaction.
- Osteoid osteomaSmall benign diaphyseal or metaphyseal lesion presenting with worsening nocturnal pain that is characteristically relieved by NSAIDs.
- Giant cell tumor of boneEpiphyseal lytic lesion in skeletally mature young adults with a characteristic 'soap bubble' appearance on radiography.
- OsteochondromaBenign metaphyseal bony exostosis with a cartilage cap, typically presenting as a painless, palpable mass.
Answer
Osteosarcoma pairs with the metaphyseal 'sunburst' lesion; Ewing sarcoma pairs with the diaphyseal 'onion-skin' lesion; Osteoid osteoma pairs with the NSAID-responsive nocturnal pain lesion; Giant cell tumor pairs with the epiphyseal 'soap bubble' lesion; and Osteochondroma pairs with the benign metaphyseal bony exostosis.
Primary bone tumors are diagnosed by combining patient age, exact location within the bone (epiphyseal, metaphyseal, or diaphyseal), and classic radiographic patterns (lytic, blastic, periosteal reactions).
Step-by-Step Solution
Key Concept
Clinical and radiographic differentiation of primary bone tumors
Estimated Time:1m 30s