Saturday, January 14, 2012

Button Sequestrum

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:


  • Krasnokutsky MV. The button sequestrum sign. Radiology. 2005 Sep;236(3):1026-7.

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