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Radical prostatectomies in Austria, 1997–2004

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Abstract

Background

The introduction of PSA testing in Austria led to a steep increase of the incidence of prostate cancer. We want to present the course of the number of newly diagnosed cases of prostate cancer in Austria since 1997, and set these numbers in relation to the total of radical prostatectomies (with resection of lymph nodes) in the same time period. All numbers were retrieved from health statistics of Statistics Austria. The report period of cancer cases and of RPE comprises the years 1997–2004. All calculations were performed for totals as well as for 5-year age groups (40–89 years of age).

Findings

The number of prostate cancer cases rose from 1997 to 2004 by 35%, while the number of RPE rose by 94% in the same time period. The proportion of RPE in relation to new cases rose from 41% in 1997 to 59% in 2004.

Conclusion

A slight decrease of prostate cancer mortality can already be observed in Austria, but the question of over-treatment still awaits analysis.

Findings

Opportunistic Prostate-Specific-Antigen testing (PSA) of healthy men started at the beginning of the 1990s and led to a steep increase of prostate cancer incidence [13]. In Austria data on surgical treatment of prostate cancer are available since 1997. The purpose of this paper is to present the correlation between the number of newly detected cases and the number of radical prostatectomies with resection of lymph nodes (RPE) by 5 year age group.

Data on the number of newly detected cases and number of prostatectomies where obtained from Statistics Austria. The data on radical prostatectomies by age group are available since 1997 only. The data set covers the age group 40 to 89 years comprising a population of 1.738,655 men in the year 2000. Since cases are anonymized it is indeterminable whether newly detected cases are operated in the year of diagnosis or in the following year, if ever.

Cases treated by perineal cryosurgery were excluded, due to the small total number (0 to 2 cases per year).

The number of newly detected cases and of RPE (1997 through 2004) as well as the calculated percentage per year by 5 year age group are given in table 1. The absolute number of prostate cancer cases rose from 3999 in 1997 to 5416 in 2004 (+35.4%, all age groups). The absolute number of RPE rose from 1648 in 1997 to 3200 in 2004 (+94.2%, all age groups). The percentage of RPE in relation to the number of newly detected cases rises from 41% in 1997 to 59% in 2004 (all age groups). The increase of this percentage is observed in all age groups younger than 70 years but not in older age groups, the linear trend over time is significant for all age groups and for totals, except for age group 40–44 years.

Table 1 Number of newly detected cases of prostate cancer in Austria, and number of radical prostatectomies 1997–2004, as well as proportion of RPE/incidence, and P value for linear time trend, totals and 5-year age groups of men aged 40–89.

The increase of the incidence of prostate cancer is well documented for Austria [1, 2], however the absolute numbers are for the first time set in relation to the number of RPE nationwide. Within 8 years, the total number of RPE increased by 94.2%, thus nearly doubled, with the increase mainly occurring in the age group 55–69 years. Starting at age 70 years the percentage of RPE remains more or less stable on a substantially lower level.

The number of RPE we used in our calculations represents the official hospital discharge statistics of Austria comprising of the collected data of all hospitals (including private hospitals), but excludes a very small number of self-pay patients. Thus our results negligibly may underestimate the relation of RPE to the number of newly detected cases. A further limitation of our analyses is caused by legal constrains: due to data protection laws we are limited to the use of depersonalized data.

The increase of RPE in Austria can be explained by at least three factors: a) operation technique meliorated significantly, now is a standard procedure, perioperative mortality is low and the risk of postoperative morbidity such as incontinence and erectile dysfunction decreased in Austria [4, 5], consequently acceptance of RPE in patients increased. b) By the introduction of PSA testing the target group of prostate cancer screening shifted towards younger age groups, meaning that carcinoma more frequently is sought in younger men [3]. c) Because of the slow progression of most cases, RPE only makes sense when health status permits RPE and patients have a life expectancy of at least 10 years [6].

The high percentage of RPE in men younger than 70 years surely also is influenced by the fact that counselling (towards RPE or radiation therapy) in Austria is performed by urologists. In this context, it is worth mentioning, that the primary intention of this manuscript is to provide the data which can serve as a basis for a constructive discussion about counselling and the provision of the most adequate therapeutic regimes.

The reason for the more or less stable percentage in men aged 70 years or older may lie in the fact that therapy of prostate cancer in these patients more often relies on watchful waiting, active surveillance, external beam radiation, brachytherapy or hormonal treatment. Detailed data for these therapies are not available.

In conclusion, currently 59% of prostate cancer cases detected are treated by RPE, a percentage steadily rising from 1997 on. On one hand, the dramatic increase of RPE already leads to a slight reduction of prostate cancer mortality in Austria [3, 7], on the other hand the question of over-testing and over-treatment, and added morbidity remains unanswered and analyses are still pending for Austria.

References

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Author information

Correspondence to Gerald Haidinger.

Additional information

Competing interests

The authors declare that they have no competing interests.

Authors' contributions

GH and CV planned the study and drafted the manuscript. CV obtained the data, GH and CV performed the statistical analysis. SM and GS contributed in preparing the manuscript. All authors read and approved the final manuscript.

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Open Access This article is published under license to BioMed Central Ltd. This is an Open Access article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Haidinger, G., Madersbacher, S., Schatzl, G. et al. Radical prostatectomies in Austria, 1997–2004. BMC Res Notes 1, 48 (2008) doi:10.1186/1756-0500-1-48

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Keywords

  • Prostate Cancer
  • Erectile Dysfunction
  • Radical Prostatectomy
  • Steep Increase
  • Watchful Waiting