PMC7142334_01
Computed tomography at first visit showing a purely osteolytic lesion on the left femur (arrowhead). (a) Coronal view and (b) axial view.
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Computed tomography (CT) revealed a severe lytic lesion on the left femur, suggesting bone metastasis (Figure 1).
Whole-body PET/CT showing 18-FDG accumulations in the left femur only, suggesting a primary malignant bone tumor or chronic bacterial osteomyelitis (arrowhead). (a) Coronal view and (b) axial view.
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Whole-body positron emission tomography/CT (PET/CT) showed 18- fluorodeoxyglucose (FDG) accumulations only in the left femur, suggesting a primary malignant bone tumor or chronic bacterial osteomyelitis (Figure 2).
X-ray findings of the left femur at different timepoints showing the radiologic change of a purely osteolytic lesion to an osteosclerotic lesion over time (arrowhead). (a) At first visit, (b) at 3 months after the first visit, and (c) at 15 months after the first visit.
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X-ray in the 3 months after the first visit confirmed the presence of a sclerotic lesion of the femur (Figures 3(a) and3(b)). X-ray at 15 months since the first visit revealed a severe circumferential sclerotic lesion of the femur, which is typically found in SAPHO syndrome (Figure 3(c)).