Mnemonics to help remember common causes of bony sequestrum include:
- E: eosinophilic granuloma
- F: fibrosarcoma
- I: infection (Brodie abscess)
- L: lymphoma (skeletal)
- M: malignant fibrous histiocytoma or metastasis (especially from breast carcinoma)
Note that an osteoid osteoma will often give an appearance of a sequestrum when the nidus is partially calcified.