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7 Cards in this Set
- Front
- Back
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- benign
- bone producing - high vascolarization macroscopic structure: round oval mass of hemorragic tissue. microscopic structure: well defined, border of osteoclasts and well vascolarized connective tissue. SELF LIMITING IN GROWTH it's painful because the osteoblasts produce PGE2 Common regions: dyaphysis or metaphysis of long bones. The adjacent tissue will show inflammation. IMAGING: well defined mass, intracortical lesions. The nidus is the core of the tumor, is a part of necrotic bone within the lytic lesion. TREATMENT: radiofrequency (not close to nerve roots) or resection. |
Osteoid Osteoma
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- Most common benign bone tumor
- Bony growth covered by a cap of cartilage - Men, <25yo - Most commonly originates from long metaphysis, mushroom-shaped - Malignant transformation to chondrosarcoma is rare |
Osteochondroma (exostosis)
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- Benign cartilaginous neoplasm
- Found in medullary cavity of bone - Usually hands and feet |
Enchondroma
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- Benign but locally agressive bone tumor
- Proliferation of osteoclast-type multinucleated giant cells - Soap bubble appearance on x-ray |
Giant Cell Tumor
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- Most common primary malignant bone tumor
- Men, 10-20yo - Most commonly found in metaphysis of long bones - Characteristics: pain, increase in AlkPhos, Codman Triangle (elevation of periosteum) on xray - Predisposing factors: Paget's dz of bone, bone infarcts, radiation, retinal blastoma |
Osteosarcoma
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- Malignant cartilaginous tumor of bone
- Men, 30-60yo |
Chondrosarcoma
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- Small blue cell malignant tumor
- Boys, <15yo - Extremely malignant, early metastases - Responds to chemotherapy - 11;22 chromosomal translocation |
Ewing sarcoma
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