Abstract
Bladder cancer is primarily a disease of older age and little is known about the differences between patients diagnosed with bladder cancer at a younger versus older age. Our objectives were to compare bladder cancer specific survival in patients aged <50 versus those aged 50–70 at time of diagnosis.
Materials and methods
The Swedish bladder cancer database provided data on patient demographics, clinical characteristics and treatments for this observational study. Cox proportional hazard regression models were adjusted for appropriate variables. All analyses were stratified by disease stage (non-muscle-invasive bladder cancer and muscle-invasive bladder cancer. Furthermore, we compared the frequency of lower urinary tract infections within 24 months prior to bladder cancer diagnosis by sex and age groups.
Results
The study included 15,452 newly-diagnosed BC patients (1997–2014); 1,207 (8%) patients were <50 whilst 14,245 (92%) were aged 50–70. Patients aged <50 at diagnosis were at a decreased risk of bladder cancer death (HR = 0.82, 95%CI: 0.68–0.99) compared to those aged 50–70. When stratified by non-muscle-invasive and muscle-invasive bladder cancer, this association remained in non-muscle-invasive patients only (<50, HR = 0.43, 95% CI: 0.28–0.64). The frequency of lower urinary tract infection diagnoses did not differ between younger and older patients in either men or women.
Conclusions
Patients diagnosed with non-muscle-invasive bladder cancer when aged <50 are at decreased risk of bladder cancer-specific death when compared to their older (50-70) counterparts. These observations raise relevant research questions about age-related differences in diagnostic procedures, clinical decision-making and, not least, potential differences in tumour biology.
| Original language | English |
|---|---|
| Pages (from-to) | 27-33 |
| Number of pages | 7 |
| Journal | Scandinavian Journal of Urology and Nephrology |
| Volume | 56 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 13 Nov 2021 |
Bibliographical note
Funding Information:This project was made possible with help of the data collected in the SNRUBC, and we would like to thank the members of the SNRUBC: Viveka Str?ck, Firas Abdul-Sattar Aljabery, Johan Johansson, Per-Uno Malmstr?m, Malcolm Carringer, Abolfazl Hosseini-Aliabad, Truls G?rdmark, Amir Sherif, Roland Rux, Markus Johansson, Petter Kollberg, Anna-Karin Lind, Jenny Waneg?rd, Magdalena Cwikiel, Elisabeth ?verholm, Anders Ullen, Erika Jonsson, Helena Thulin, Gun Danielsson, Helene Hummer, Fredrik Liedberg, and Staffan Jahnson.
Publisher Copyright:
© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
Keywords
- Age
- NMIBC
- MIBC
- bladder cancer death
- survival
- Nephrology
- Urology
ASJC Scopus subject areas
- Nephrology
- Urology
Access to Document
- RussellB2021Risk
This is an Accepted Manuscript version of the following article, accepted for publication in Scandinavian Journal of Urology. Beth Russell, Fredrik Liedberg, Oskar Hagberg, Anders Ullén, Karin Söderkvist, Viveka Ströck, Firas Aljabery, Truls Gårdmark, Tomas Jerlström, Amir Sherif, Lars Holmberg, Richard T. Bryan, Deborah Enting & Mieke Van Hemelrijck (2021) Risk of bladder cancer death in patients younger than 50 with non-muscle-invasive and muscle-invasive bladder cancer, Scandinavian Journal of Urology, DOI: 10.1080/21681805.2021.2002399. It is deposited under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.