- Cystic expansile lesion
- Often hemorrhagic
- Vertebral appendages, flat bones
- Metaphysis of long bones – femur, tibia, humerus
- Secondary to bone tumors in 30% cases
Imaging
- Plain film
- Eccentrically without crossing growth plate
- Destructive expansile lesion in vertebral appendages, encroaching spinal canal
- D/D: telangiectatic osteosarcoma
- MRI
- Fluid-fluid levels due to hemorrhage
Read more
Beltran, Javier, et al. “Aneurysmal bone cysts: MR imaging at 1.5 T.” Radiology 158.3 (1986): 689-690.
Levy, Walter M., et al. “Aneurysmal bone cyst secondary to other osseous lesions: report of 57 cases.” American journal of clinical pathology 63.1 (1975): 1-8.
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