Bone tumor morphology, connective tissue disease histology, and classic skin biopsy findings, one finding per card.
39 cards · basic cards · AI-written, checked twice. Edit anything.
- Which bone tumor classically shows a Codman triangle on X-ray?
- Osteosarcoma
- What X-ray pattern of periosteal new bone formation is classic for osteosarcoma?
- Sunburst pattern
- Osteosarcoma most commonly arises in which part of a long bone?
- The metaphysis, often around the knee
- What is the most common benign bone tumor?
- Osteochondroma
- What small, painful bone lesion has a central nidus and improves with NSAIDs?
- Osteoid osteoma
- A 'soap bubble' lytic lesion in the epiphysis near the knee suggests which tumor?
- Giant cell tumor of bone
- What characteristic cell type gives giant cell tumor of bone its name?
- Multinucleated osteoclast-like giant cells
- What periosteal reaction pattern on X-ray is classic for Ewing sarcoma?
- Onion-skin (lamellated) periosteal reaction
- Ewing sarcoma is composed histologically of ____.
- small round blue cells
- What chromosomal translocation is characteristic of Ewing sarcoma?
- t(11;22)
- What is the malignant cartilage-forming bone tumor called?
- Chondrosarcoma
- What benign tumor of hyaline cartilage arises within the medullary cavity, often in the hands?
- Enchondroma
- What bone lesion shows a 'ground glass' appearance on X-ray?
- Fibrous dysplasia
- In fibrous dysplasia, the woven bone trabeculae have a histologic pattern described as ____.
- Chinese letters
- In SLE, concentric periarterial fibrosis in the spleen produces what classic finding?
- Onion-skin lesions