What is the most likely diagnosis?
- 10 year-old who fell on shoulder
AP Radiograph of Right Arm
- Metastatic disease
- Ewing sarcoma
- Eosinophilic granuloma
- Solitary plasmacytoma
- Unicameral bone cyst
Additional Image-None
Additional Images
None
Answer:
5. Unicameral bone cyst
More (Click Discussion Tab)
Unicameral bone cyst
General Considerations
- Common (3-5% of primary bone tumors)
- Benign
- Solitary lesion
- Most common in proximal humerus and femur
- Also Iliac bone and calcaneous, especially over age 20
- Most common between 4-10 years old
- Filled with clear, yellowish fluid
- May contain giant cells and hemosiderin