Published in:
Open Access
01-02-2024 | Breast Cancer | Original Article
Association Between 18F-FDG PET Activity and HER2 Status in Breast Cancer Brain Metastases
Authors:
Jonathan R. Young, Julie A. Ressler, Joanne E. Mortimer, Daniel Schmolze, Mariko Fitzgibbons, Bihong T. Chen
Published in:
Nuclear Medicine and Molecular Imaging
|
Issue 3/2024
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Abstract
Purpose
The objective of this study was to evaluate whether uptake on 18F-fluorodeoxyglucose (18F-FDG) PET could help differentiate HER2-positive from HER2-negative breast cancer brain metastases.
Methods
In this retrospective, cross-sectional study of a cohort of 14 histologically proven breast cancer brain metastases, we analyzed both preoperative 18F-FDG PET/CT and HER2 status of the resected/biopsied brain specimens. The maximum standardized uptake values (SUVmax) of the lesions were normalized to contralateral normal white matter and compared using Mann–Whitney U tests.
Results
The study cohort was comprised of 12 women with breast cancer with a mean age of 59 years (range: 43–76 years) with a total of 14 distinct brain metastatic lesions. The SUVmax ratio of HER2-positive breast cancer brain metastases was significantly greater than that of HER2-negative lesions (3.98 vs 1.79, U = 38.00, p = 0.008).
Conclusion
The SUVmax ratio may help to identify the HER2 status of breast cancer brain metastases, if validated prospectively.