Resolution of Pulmonary FDG-embolus on Same-day Delayed Imaging.
case_report · Level V
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- Record sourced from PubMed, PMID 41222629.
- Also identified by DOI 10.1097/RLU.0000000000006116.
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Abstract
A 32-year-old woman presented for an 18 F-FDG PET/CT scan for a lung nodule, which demonstrated background uptake. Incidentally, there was a focus of moderate-to-intense uptake in the right lung with no CT correlate. Repeat imaging 55 minutes later demonstrated resolution of this uptake, confirming a diagnosis of iatrogenic FDG-embolus, or "hot-clot" artifact. Most reported cases perform repeat radiotracer injection and imaging in the following days to confirm this artifact. This case illustrates that FDG-emboli can resolve on delayed imaging within an hour, and if so, repeat acquisition with a separate injection may be avoided, lowering radiation exposure for the patient.
Medical subject headings
- Fluorodeoxyglucose F18
- Positron Emission Tomography Computed Tomography
- Pulmonary Embolism