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Does therapy of the primary tumor matter in oligometastatic prostate cancer? A prospective 10-year follow-up study

Authors Poulsen MH, Jakobsen JS, Mortensen MA, Høilund-Carlsen PF, Lund L

Received 8 October 2018

Accepted for publication 15 April 2019

Published 30 July 2019 Volume 2019:11 Pages 215—221


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Dr Jan Colli

Mads Hvid Poulsen,1,2 Jørn Skibsted Jakobsen,3 Mike Allan Mortensen,1,4 Poul Flemming Høilund-Carlsen,4,5 Lars Lund1,2,4

1Department of Urology, Odense University Hospital, Odense, Denmark; 2Academy of Geriatric Cancer Research (AgeCare), Odense University Hospital, Odense, Denmark; 3Department of Urology, Herlev and Gentofte University Hospital, Copenhagen, Denmark; 4Department of Clinical Research, University of Southern Denmark, Odense, Denmark; 5Department of Nuclear Medicine, Odense University Hospital, Odense, Denmark

Objective: The effect of curative treatment for oligometastatic prostate cancer patients is unsolved, both with regard to morbidity and mortality. With this study, we provide some of the first long-term follow-up data on progression and mortality in oligometastatic prostate cancer patients after curative treatment of their primary tumor.
Methods: A cohort of 210 patients with diagnosed prostate cancer was established between 2008 and 2010. All patients were scheduled for intended curative treatment, and all underwent blinded 18F-choline positron-emission tomography/computed tomography at inclusion prior to curative treatment. Upon unblinding, 12 patients (6%) were recategorized as being oligometastatic. They had a mean age of 64 years,median prostate-specific antigen of 18 ng/mL, and median Gleason score of 7. Six patients were staged as T3, one T2, and five T1. The patients had a medianof one bone metastasis (range 1–2). All underwent intended curative radiotherapy or prostatectomy. Mean follow-up was 10.1 (8.9–11.0) years.
Results: During follow-up of the 12 patients, three (25%) had biochemical recurrence, two developed castration-resistant disease, and one died due to prostate cancer.
Conclusion: Our results suggest that intended curative treatment of the primary tumor in oligometastatic prostate cancer may have a role in highly selected patients.

Keywords: prostate cancer, oligometastases, treatment

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