Journal
INTERNATIONAL JOURNAL OF CLINICAL ONCOLOGY
Volume 17, Issue 3, Pages 276-282Publisher
SPRINGER JAPAN KK
DOI: 10.1007/s10147-011-0287-2
Keywords
pCR; SUV; Anthracycline; Taxane
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Funding
- Department of Breast Oncology, Saitama Medical University
- Medical Research of National Defense Force
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To assess the usefulness of positron emission tomography combined with computed tomography using F-18-fluorodeoxyglucose (FDG PET/CT) for optimizing chemotherapy during neoadjuvant chemotherapy for primary breast cancer. One hundred and eight patients (110 tumors) with breast cancer (a parts per thousand yen2 cm, stages II and III) received neoadjuvant chemotherapy consisting of an anthracycline-based regimen and taxane. The maximal value of the baseline standardized uptake value (SUV) and the change in SUV after four cycles of an anthracycline-based regimen relative to baseline SUV were assessed for predicting pathological complete response (pCR) after sequential taxane. Tumors with pCR had significantly higher baseline SUV (9.3 +/- A 3.7 SD) compared to those with non-pCR (7.2 +/- A 3.8 SD) (p = 0.02), but there was a considerable overlap between two groups. On PET scan after four cycles of chemotherapy, thirty-three patients (33.7%) with a 72.1% or greater reduction in SUV were considered as responders and the performance in predicting pCR had a sensitivity of 88.9% and specificity of 78.7%. The baseline SUV could not be a useful indicator for predicting pCR due to the wide range in sensitivity. On the other hand, a relative change in SUV after completion of an anthracycline-based regimen could be useful for predicting pCR.
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