THERE IS A LUCENT LESION IN THE
BODY OF THE CALCANEOUS (WHITE ARROW), WITH A CENTRAL AREA OF CALCIFICATION
(RED ARROW). THE LESION APPEARS WELL DEFINED AND HAS A NARROW
ZONE OF TRANSITION. THERE IS NO ASSOCIATED PERIOSTEAL REACTION, SOFT
TISSUE SWELLING, OR EVIDENCE OF A FRACTURE. THIS LESION HAS A BENIGN
APPEARANCE. THE DIFFERENTIAL DIAGNOSIS FOR A BENIGN APPEARING LESION
IN THIS LOCATION OF THE CALCANEOUS WOULD INCLUDE NORMAL TRABECULAR RAREFACTION,
AN INTRAOSSEOUS LIPOMA, OR A SIMPLE BONE CYST. THE APPEARANCE OF
THIS LESION, HOWEVER, WITH THE CENTRAL CALCIFICATIONS, HIGHLY SUGGESTS
THE DIAGNOSIS OF AN INTRAOSSEOUS LIPOMA.
REFERENCE: Resnick, D., Bone
and Joint Imaging. W.B. Saunders. 1989. p. 1155
