SUVmax of 18FDG PET/CT as a predictor of high-risk endometrial cancer patients

Sofie Leisby Antonsen, Annika Loft, Rune Vincents Fisker, Anne Lerberg Nielsen, Erik Søgaard Andersen, Estrid Høgdall, Ann Tabor, Kirsten Væver Jochumsen, Carsten L Fagö-Olsen, Jon Asmussen, Anne Kiil Berthelsen, Ib Jarle Christensen, Claus Høgdall

Abstract

Objective: To evaluate SUVmax in the assessment of endometrial cancer preoperatively with particular focus on myometrial invasion (MI), cervical invasion (CI), FIGO stage, risk-stratification and lymph node metastases (LNM). Methods: A total of 268 women with endometrial cancer or atypical endometrial hyperplasia underwent FDG PET/CT imaging before surgical treatment. SUVmax of the primary tumour was compared with histological prognostic factors. Results: SUVmax was significantly higher in patients with high FIGO stages (p < 0.0001), deep MI (p = 0.002), CI (p = 0.04), LNM (p = 0.04) and high risk tumours (p = 0.003). Linear regression found that SUVmax was dependent of MI (p = 0.001, 95% CI 2.863-11.098), CI (p = 0.001, 95% CI 2.896-11.499), risk (p = 0.004, 95% CI 0.077-0.397), LNM (p = 0.04, 95% CI 0.011-0.482) and FIGO stage (p < 0.0001, 95% CI 0.158-0.473). Conclusions: Preoperative PET/CT scanning and SUVmax measurements of the primary tumour may provide additional clinical and prognostic information about MI, CI, LNM and high risk disease in patients with endometrial cancer and allow for individualization of patient care. However, the sensitivity and specificity of the SUVmax in staging endometrial cancer is not high enough to reliably replace surgical staging.

Original languageEnglish
JournalGynecologic Oncology
Volume129
Issue number2
Pages (from-to)298-303
Number of pages6
ISSN0090-8258
DOIs
Publication statusPublished - May 2013

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