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Long-term follow-up of International Prostate Symptom Score (IPSS) in men following prostate brachytherapy

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Abstract

Objective

To investigate variation in the International Prostate Symptom Score (IPSS) in men following prostate brachytherapy.

Methods

From January 2004 to November 2009, 524 consecutive patients underwent prostate brachytherapy either alone or in combination with external beam radiation therapy for T1c–T3b prostate cancer. The IPSS was assessed preimplant and at 1, 6, 12, 24, 36, and 48 months after treatment. Clinical and treatment-related factors were assessed for correlations with the IPSS increase.

Results

The mean preimplant IPSS was 7.4, with the greatest mean score of 16.0 at 1 month. At 6 months, the mean total IPSS had decreased to 11.5, but it was still statistically significantly greater than that at baseline (<0.001). At 12 months, the IPSS was decreased to 8.6, slightly greater than baseline (p = 0.001). The IPSS of 45.4 % (69/152) patients gradually returned to preimplant levels and that of 71.1 % (108/152) patients returned to within 3 points of the baseline at 24 months. At 24, 36, and 48 months after seed implantation, the IPSS was 8.6, 7.7, and 8.2, respectively, and none of these values differed statistically significantly from baseline (p > 0.05). Sixteen patients (3.1 %) showed AUR, and 11 patients required catheterization. On univariate and multivariate analyses, the IPSS increase was best predicted by lower preimplant IPSS.

Conclusion

In our series, IPSS after prostate brachytherapy peaked at 1 month and gradually returned to approximately baseline at 24 months. The IPSS increase was best predicted by lower preimplant IPSS.

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Acknowledgments

This study was partly supported by Pfizer Asia Urology Preceptorship Program. The authors wish to acknowledge and thank all of the people who helped make this study possible, and in particular, the doctors in the Department of Urology, University of California at San Francisco.

Conflict of interest

None of the contributing authors have any conflicts of interest, including specific financial interests and relationships and affiliations relevant to the subject matter or materials discussed in the manuscript.

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Correspondence to Xuesong Li or Matthew R. Cooperberg.

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Li, X., Fang, D., Cooperberg, M.R. et al. Long-term follow-up of International Prostate Symptom Score (IPSS) in men following prostate brachytherapy. World J Urol 32, 1061–1066 (2014). https://doi.org/10.1007/s00345-013-1188-y

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  • DOI: https://doi.org/10.1007/s00345-013-1188-y

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