Match each patient's clinical and radiographic presentation with the most likely orthopedic diagnosis.
- A 15-year-old boy with chronic thigh pain that is worse at night and dramatically improves with ibuprofen. Imaging shows a 1-cm radiolucent nidus with surrounding reactive sclerosis in the femoral cortex.Osteoid osteoma
- A 16-year-old girl with progressive knee swelling. Imaging of the distal femur reveals a destructive medullary lesion with a 'sunburst' pattern and elevation of the periosteum (Codman triangle).Osteosarcoma
- A 12-year-old boy with a low-grade fever and localized thigh pain. Imaging of the femoral diaphysis shows a permeative, moth-eaten lesion with an 'onion skin' periosteal reaction.Ewing sarcoma
- A 28-year-old woman with worsening knee discomfort. Imaging of the proximal tibia demonstrates an expansile, eccentric, 'soap bubble' lytic lesion located in the epiphysis.Giant cell tumor of bone
- A 14-year-old boy with a painless, hard mass palpable near his knee. Imaging reveals a cartilage-capped bony exostosis projecting outward from the distal femoral metaphysis, pointing away from the joint line.Osteochondroma
Cevap
Presentation 1 matches with Osteoid osteoma; Presentation 2 matches with Osteosarcoma; Presentation 3 matches with Ewing sarcoma; Presentation 4 matches with Giant cell tumor of bone; Presentation 5 matches with Osteochondroma.
Each primary bone tumor has a characteristic profile. Osteoid osteoma presents with NSAID-responsive pain and a sclerotic nidus. Osteosarcoma involves the metaphysis with a sunburst pattern. Ewing sarcoma involves the diaphysis with an onion-skin pattern and can cause systemic symptoms. Giant cell tumor involves the epiphysis in adults with a soap-bubble appearance. Osteochondroma is a benign stalk pointing away from the joint.
Adım Adım Çözüm
Anahtar Kavram
Differentiation of primary bone tumors based on patient age, tumor location (epiphysis vs. metaphysis vs. diaphysis), and characteristic radiographic patterns.
Tahmini Süre:1m 30s