Iatrogenic FDG foci in the lungs: a pitfall of PET image interpretation

Thomas F Hany¹, Juerg Heuberger, Gustav K von Schulthess

¹Department of Nuclear Medicine, University Hospital, Rämistrasse 100, 8091 Zurich, Switzerland.

|August 21, 2003

Abstract:

2-[F-18]-fluoro-2-deoxy-D-glucose (FDG) positron emission tomography (PET) has become an important staging modality for many tumors, including bronchial carcinoma; however it is important to know that there are several pitfalls in PET image interpretation. In this report we demonstrate three cases in which focal intrapulmonary FDG uptake could possibly represent iatrogenic microembolism. These FDG accumulations would have been interpreted as malignant tumor mass in the lung if no anatomic correlation would have been performed. For this reason, we further present an integrated PET/CT scanner, which recently has been introduced. This correlation of molecular and morphological information enables the specification of the FDG-PET findings.

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Abstract:

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