Pumice stone sign

Last revised by Hoe Han Guan on 28 Apr 2023

The pumice stone sign is a recently described distinctive imaging appearance of emphysematous osteomyelitis on CT described as clusters of greater than 3 distinct foci of intramedullary gas with irregularly irregular sizes ranging between 2 and 5 mm with resemblance to surface appearance of pumice stone. This sign is seen in 96% of cases of emphysematous osteomyelitis.1, 2

According to one study 1, most (79%) cases of emphysematous osteomyelitis were not associated with cortical destruction of bone unlike traditional osteomyelitis. Hence this sign may help in early diagnosis and treatment of this life-threatening condition. Adjacent soft tissue emphysema (79%) is also a key imaging feature.

ADVERTISEMENT: Supporters see fewer/no ads

Cases and figures

  • Fig. 1: pumice stone
    Drag here to reorder.
  • Case 1
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.