Borderline tumours of the ovary: A cohort study of the Arbeitsgmeinschaft Gynäkologische Onkologie (AGO) Study Group

Andreas Du Bois, Nina Ewald-Riegler, Nikolaus De Gregorio, Alexander Reuss, Sven Mahner, Christina Fotopoulou, Friedrich Kommoss, Barbara Schmalfeldt, Felix Hilpert, Tanja Fehm, Alexander Burges, Werner Meier, Peter Hillemanns, Lars Hanker, Annette Hasenburg, Hans Georg Strauss, Martin Hellriegel, Pauline Wimberger, Mignon Denise Keyver-Paik, Klaus BaumannUlrich Canzler, Kerstin Wollschlaeger, Dirk Forner, Jacobus Pfisterer, Willibald Schröder, Karsten Münstedt, Barbara Richter, Stefan Kommoss, Steffen Hauptmann


Background: Borderline ovarian tumours (BOTs) are recognised as a unique entity of ovarian tumours that do not exert infiltrative destructive growth or stromal invasion. Prognosis of BOT is much better compared to the more common invasive epithelial ovarian cancer. Information regarding prognostic factors is inconclusive and no prospective studies exist that evaluate therapeutic strategies. We therefore started a retrospective-prospective cohort study to better understand BOT and identify scenarios in which future studies could be developed. Methods: Consecutive patients with BOT treated between 1998 and 2008 in 24 German centres were analysed. The retrospective part of the study retrieved patients' data from hospital records and clinical tumour registries while active follow-up and an independent central pathology review were carried out prospectively. Findings: BOT was confirmed in 950 patients, two thirds had serous BOT and 30.5% mucinous BOT. Most were diagnosed in stage I (82.3%); 7.6% and 10.1% had stages II and III, respectively. Overall, 74 patients (7.8%) experienced relapse and 43 (4.5%) died within the observation period. Multivariate analysis revealed higher stage, incomplete staging, tumour residuals, and organ preservation as independent prognostic factors for disease recurrence. Neither microinvasion nor micropapillary growth pattern showed any significant impact. Of 74 relapsed patients, 30% had malignant transformation to invasive ovarian cancer with five-year progression-free survival and overall survival of 12% and 50%, respectively. Interpretation: Prognosis of BOT correlates with tumour-related as well as surgery-related factors. The balance between recurrence risk and organ preservation and fertility-sparing surgery is an important issue deserving further research. © 2013 Elsevier Ltd. All rights reserved.
Original languageEnglish
Title of host publicationEuropean Journal of Cancer
Number of pages10
Publication date05.2013
ISBN (Print)2011743400
Publication statusPublished - 05.2013


Dive into the research topics of 'Borderline tumours of the ovary: A cohort study of the Arbeitsgmeinschaft Gynäkologische Onkologie (AGO) Study Group'. Together they form a unique fingerprint.

Cite this