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2-fluoro-2-deoxy-D-glucose positron emission tomography versus conventional imaging for the diagnosis of breast cancer and lymph node metastases


1 Department of Surgery, Linyi People's Hospital, Linyi 276003, Shandong Province, China
2 Department of Nuclear Medicine, Jinhua Central Hospital, Jinhua Hospital of Zhejiang University, Jinhua 321000, Zhejiang, China

Correspondence Address:
Guanghua Wen,
Department of Nuclear Medicine, Jinhua Central Hospital, Jinhua Hospital of Zhejiang University, Mingyue Road 351, Jinhua 321000, Zhejiang
China
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Source of Support: None, Conflict of Interest: None

Context: Proper preoperative staging is vital in the treatment of breast cancer patients. Fluorine-18-labeled 2-fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography (18 F-FDG-PET/CT) and conventional diagnostic modalities including ultrasonography (US), mammography (MG), and magnetic resonance imaging (MRI) play a greater role. Aims: To evaluate the diagnostic accuracy of FDG-PET in detecting primary breast cancer as compared with US, MG, and MRI, and in axillary lymph nodes (ALNs) staging in Chinese women. Settings and Design: It is a study of diagnostic accuracy. Subjects and Methods: Thirty-one female patients, with biopsy established breast carcinoma, were recruited and analyzed retrospectively. All patients underwent 18 F-FDG-PET, MG, US, and MRI. FDG-PET/CT for the diagnosis of primary breast cancer and detecting ALNs metastases were compared with MG, US, and MRI. Statistical Analysis Used: Sensitivity, specificity, positive-predictive value (PPV), and negative-predictive value (NPV) of FDG-PET imaging for primary breast cancers and ALN staging were analyzed using standard statistical analyses. Results: In 31 patients with cytologically established invasive breast carcinoma, the sensitivities of US, MG, MRI, and FDG-PET/CT were 90% (28/31), 84% (26/31), 97% (30/31), and 94% (29/31), respectively. The sensitivity, specificity, overall accuracy, PPV, and NPV of US, MRI, and FDG-PET/CT in ALN staging (maximum standardized uptake value cutoff at 1.5) were 80%, 86%, 84%, 80%, and 90%; 90%, 95%, 94%, 90%, and 95%; and 90%, 86%, 87%, 90%, and 95%, respectively. Conclusions: US and MRI should remain the first line for the diagnosis of breast cancer. Both MRI and FDG-PET/CT could accurately diagnose the primary breast cancer and stage the axilla lymph nodes, but further large population study is needed.


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    -  Zi J
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