Journal
IN VIVO
Volume 35, Issue 1, Pages 23-30Publisher
INT INST ANTICANCER RESEARCH
DOI: 10.21873/invivo.12228
Keywords
Breast cancer; CT/PET; imaging; sentinel node biopsy; axillary disease
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Funding
- Breast Cancer Hope Foundation, UK
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This study systematically reviewed the role of 18-Fluorodeoxyglucose PET/CT in breast cancer staging, finding that it has low sensitivity but high specificity for ALN disease. The study suggests considering ultrasound-guided biopsy in cases of positive CT/PET, as the modest accuracy of 18-FDG-PET/CT alone hinders its use in axillary staging.
Background/Aim: Axillary lymph node (ALN) status plays a key role in the staging of breast cancer. Positron Emission Tomography/Computed Tomography (PET/CT) using 18-Fluorodeoxyglucose ((18)FDG) can visualise ALN metastasis. However, its utility compared to current methods is unclear. We systematically reviewed the role of (18)FDG PET/CT in breast cancer staging. Materials and Methods: PubMed, Ovid and Cochrane were searched systematically up until August 2020. Included papers had true positive (TP), false positive (FP), true negative (TN) and false negative (FN) rates, sensitivity, specificity, accuracy, positive (PPV) and negative predictive value (NPV). Results: Nine studies (n=1486) were included, showing: i) sensitivity= 52 2%, ii) specificity=91.6%, iii) PPV=77 .8%, iv) NPV=77 .2, and v) accuracy=77 .3%. Conclusion: (18)FDG-PETICT has a low sensitivity but high specificity for ALN disease. Therefore, ultrasound-guided biopsy could be considered in a positive CT/PET. Modest accuracy prohibits the use of (18)FDG-PETICT alone in axillary staging. Prospective research using standardised protocols and quantitative cut-off points is warranted.
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