The button sequestrum is a lucent bony lesion with an internal opacity. It is a nonspecific finding that is an uncommon/rare manifestation of the following conditions:
- Langerhans cell histiocytosis of bone:
- Osteomyelitis:
- Fibrous sarcomas of bone: Includes fibrosarcoma, desmoplastic fibroma and malignant fibrous histiocytoma of bone.
- Lymphoma:
- Intraosseous Lipoma: Lucent lipoma with partial calcification.
- Tuberculous osteitis:
- Radiation necrosis:
- Metastatic carcinoma:
- Fibrous dysplasia:
- Epidermoid and dermoid cyst:
- Hemangioma:
- Meningioma:
References
- Krasnokutsky MV. The button sequestrum sign. Radiology. 2005 Sep;236(3):1026-7.
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