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PET Scans | saccatholicforum.org FDG PET has demonstrated usefulness in discriminating tumor recurrence from post-operative and post-radiation changes in the breast and PET imaging has also been shown to add incremental information to conventional imaging studies in defining disease extent. How to Prepare for the Test You may be asked not to eat anything for 4 to 6 hours before the scan. Pre-operative determination of node status is essential as clinical evaluation is usually inaccurate. Very small areas of breast cancer may not show up on a PET scan. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. Yasuda S, Ide M. Abnormal results may mean that the breast cancer has spread.
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