False-positive FDG PET/CT due to liver parenchymal injury caused by a surgical retractor.
A 70-year-old man underwent partial gastrectomy with pathology demonstrating gastric follicular lymphoma. After surgery, a staging FDG PET/CT study demonstrated an FDG-avid low-attenuation band in the liver. Corresponding MRI demonstrated a high T2 signal abnormality. This was believed to represent liver parenchymal injury due to liver retraction during surgery. The patient was managed conservatively. MRI at 1 month of follow-up demonstrated resolution of the T2 signal abnormality. FDG PET/CT at 6 months of follow-up demonstrated resolution of FDG uptake. Tissue injury from surgical retraction can produce FDG-avid lesions that need to be distinguished from malignancy on PET/CT.
Published In/Presented At
Lyall, A., & Ulaner, G. A. (2012). False-positive FDG PET/CT due to liver parenchymal injury caused by a surgical retractor. Clinical nuclear medicine, 37(9), 910–911. https://doi.org/10.1097/RLU.0b013e31825b23c0
Diagnosis | Medicine and Health Sciences | Other Analytical, Diagnostic and Therapeutic Techniques and Equipment | Radiology
Department of Radiology and Diagnostic Medical Imaging