Increased 18F-fluoroestradiol uptake in radiation pneumonia
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A 54-year-old metastatic breast cancer patient who had undergone chemotherapy and radiotherapy was transferred to our hospital for further treatment. We utilized 18F-fluoroestradiol (FES) to assess the estrogen receptor (ER) status of metastatic lesions. Interestingly, high accumulation of 18F-FES in pneumonia caused by radiation was detected. Hence, this draws oncologists’ attention to the possible false-positive result of 18F-FES, which may lead to inappropriate endocrine therapy.
KeywordsBreast cancer 18F-FES PET Radiation pneumonitis
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