Anterior and posterior whole-body and spot pelvic views demonstrate focally increased activity in the right proximal femur (arrows). Physiologic salivary, hepatic, splenic, osseous, and bowel activity is seen.

Differential Diagnosis

•  Gallium scan showing osteomyelitis: Focally increased osseous activity makes this the most likely diagnosis, given the history.

•  Gallium scan showing a bone metastasis: This could have a similar appearance, but without additional foci or a history of malignancy, it is less likely.

•  Gallium scan showing a hip fracture: This could have a similar appearance but is less likely, given the history.

Essential Facts