MSK Quiz#24, Pruimary Bone Tumors  

1. A 14-year-old boy presents with knee pain that worsens at night and improves with aspirin. Radiographs of the affected area show a lesion in the metaphysis of the long bone with a characteristic "onion-skin" appearance. Which of the following is the most likely diagnosis? 

Question 1 of 5

2. An 18-year-old female presents with a painful, palpable mass on her distal femur. Radiographs reveal a sunburst pattern and Codman's triangle near the lesion site. Which of the following is the most likely diagnosis? 

Question 2 of 5

3. A 65-year-old male presents with a painless mass on his pelvis. Biopsy of the lesion shows malignant chondrocytes producing a matrix. Which of the following is the most likely diagnosis? 

Question 3 of 5

4. A 30-year-old woman presents with a slow-growing, painless mass on her proximal humerus. Radiographs reveal a well-circumscribed lesion with a "soap bubble" appearance. Which of the following is the most likely diagnosis? 

Question 4 of 5

5. A 10-year-old boy presents with a painless, palpable mass on his knee. X-ray reveals a pedunculated lesion with a cartilaginous cap originating from the metaphysis. Which of the following is the most likely diagnosis? 

Question 5 of 5


 

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