Abstract
Purpose
This study was conducted to compare the clinical stage derived from 2-deoxy-2-[F-18]fluoro-d-glucose (FDG) positron emission tomography (PET) to that of integrated PET/computed tomography (CT) in restaged breast cancer patients.
Procedures
Fifty-eight female patients (age range 29–80 years, mean age ±SD, 53.3 ± 11.7 years) underwent PET/CT restaging for breast cancer. Two experienced nuclear medicine physicians interpreted PET images. A radiologist was added for reading PET/CT studies. A patient-based analysis was performed. Histopathological findings, correlative imaging studies, changes in number, size, and hypermetabolic activity of suspicious lesions and/or patient outcome served as standard of reference for determining the diagnostic accuracy of both modalities.
Results
PET staged 79.3% (46/58) of the patients correctly, overstaged seven (12.1%), and understaged five patients (8.6%). Integrated PET/CT staged 89.7% (52/58) of the patients correctly, overstaged four (6.9%), and understaged two patients (3.4%). The staging accuracy of PET/CT was not significantly better than that of PET alone (p = 0.059). Lesions exhibiting mild hypermetabolic activity, benign inflammatory lesions, and physiological variants largely explained incorrect PET findings.
Conclusion
Integrated PET/CT only marginally improves the restaging accuracy over PET alone (p = 0.059) in breast cancer patients.
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Acknowledgment
Barbara Fueger has been funded by the Austrian Science Fund through an Erwin Schroedinger Scholarship.
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Fueger, B.J., Weber, W.A., Quon, A. et al. Performance of 2-Deoxy-2-[F-18]fluoro-d-glucose Positron Emission Tomography and Integrated PET/CT in Restaged Breast Cancer Patients. Mol Imaging Biol 7, 369–376 (2005). https://doi.org/10.1007/s11307-005-0013-4
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DOI: https://doi.org/10.1007/s11307-005-0013-4