Abstract
Purpose
Using integrated PET/CT, we evaluated the prognostic value of [18F]FDG uptake ratio between pelvic lymph node (LN) and primary tumor in invasive squamous cell carcinoma (SCCA) of the uterine cervix.
Methods
We retrospectively reviewed patients with International Federation of Gynecology and Obstetrics (FIGO) stages IB to IIA cervical SCCA who underwent preoperative [18F]FDG PET/CT scans. PET/CT parameters such as maximum standardized uptake value (SUV) of the primary cervical cancer (SUVcervix) and LN (SUVLN), and the LN-to-cervical cancer SUV ratio (SUVLN/SUVcervix) were assessed. Prognostic values of PET/CT-derived metabolic and volumetric variables and clinicopathology parameters were analyzed to predict progression-free survival (PFS) in regression analyses.
Results
Clinical data, treatment modalities, and results were reviewed for 103 eligible patients. Median post-surgical follow-up was 29 months (range, 6–89), and 19 (18.5%) patients experienced recurrence. Multivariate logistic regression analysis showed that SUVLN / SUVcervix > 0.1747(P = 0.048) was the independent risk factor of recurrence. Patient group categorized by SUVLN/SUVcervix showed significant difference in PFS (log-rank test, P < 0.001).
Conclusions
Preoperative SUVLN/SUVcervix measured by [18F]FDG PET/CT was significantly associated with recurrence, and has an incremental prognostic value for PFS in patients with cervical SCCA.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of retrospective study, formal consent is not required.
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Chung, H.H., Cheon, G.J., Kim, JW. et al. Prognostic importance of lymph node-to-primary tumor standardized uptake value ratio in invasive squamous cell carcinoma of uterine cervix. Eur J Nucl Med Mol Imaging 44, 1862–1869 (2017). https://doi.org/10.1007/s00259-017-3729-x
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DOI: https://doi.org/10.1007/s00259-017-3729-x