Atlas of Signs in Musculoskeletal Radiology is approved by the ARRS (American Roentgen Ray Society) and is included in AJR Webreview

A. Gentili,MD, M. Beller, MD, S. Masih, MD, L.L. Seeger, MD

Diagnosis:

Eosinophilic granuloma

Discussion:

Single slice of a CT scan of the pelvis with an abnormal lucent area with a sclerotic focus within it in the left hemipelvis. This sign was originally utilized to describe an unusual radiographic manifestation of Eosinophilic Granuloma. It is a round, lucent defect with a bony density, or sequestrum, in its center. This is not pathognomonic as other disease entities such as osteomyelitis can have a similar appearance.

References:

Atlas of Signs in Musculoskeletal Radiology is approved by the ARRS (American Roentgen Ray Society) and is included in AJR Webreview

A. Gentili,MD, M. Beller, MD, S. Masih, MD, L.L. Seeger, MD