- Is a rare manifestation of tuberculosis.
- This radiographic manifestation is known spina ventosa, spina meaning small bone and ventosa meaning expanded with air.
- Can mimic bone tumour, so a biopsy should be done.
- It involves the diaphyseal expansile lesion with preservation of the periosteal cortex.
Bonus: mnemonic for dactylitis (8S)
Spina ventosa (TB)
Sickle cell disease
Serum uric acid is high (gout)