Imaging Case of the Week 196 Answer

The frontal and lateral thumb x-rays show a lucent area involving the distal phalanx with irregular dorsal cortex. The patient went on to have a CT of the left thumb, which showed lytic destruction of the distal phalanx, with a sequestrum confirming osteomyelitis.

osteomyelitis distal phalanx left thumbLeft thumb distal phalanx osteomyelitisCT left thumb

Blood cultures were negative. A bone biopsy revealed staphylococcal growth. The patient was treated with long-term intravenous flucloxacillin as per sensitivities.

 

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