fig2

Figure 2. Two cases of low-grade cardiac device infection due to C. acnes. Mild and focal FDG uptake on the rear of the generator/pocket of the device (A, arrow) and along the extravascular segment of the leads (B, arrowheads). There were no significant associated soft tissue changes. Both patients complained of intense local pain without clear signs of inflammation at physical examination. [¹⁸F]FDG PET/CT should be carefully evaluated to detect these low-grade infections since findings are subtle and may be unnoticed. The diagnosis was confirmed in both cases by cultures of the removed devices. FDG: fluorodeoxyglucose; [¹⁸F]FDG PET/CT: ¹⁸F-fluorodeoxyglucose positron emission tomography/computed tomography.