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ORIGINAL ARTICLE
Year : 2018  |  Volume : 29  |  Issue : 3  |  Page : 136-144

Impact of high-volume disease in Asian population with newly diagnosed metastatic prostate cancer


Department of Urology, National Taiwan University Hospital, Zhongzheng District, Taipei, Taiwan

Correspondence Address:
Chung-Hsin Chen
Department of Urology, National Taiwan University Hospital and College of Medicine, No. 7, Zhongshan South Road, Zhongzheng District, Taipei 100
Taiwan
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/UROS.UROS_11_18

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Purpose: The purpose of this study is to investigate the clinical oncological outcomes and prognostic factors of high-volume disease (HVD) in the Asian population with metastatic hormone-sensitive prostate cancer. Methods: We retrospectively analyzed 503 patients with newly diagnosed metastatic prostate cancer. Patients were classified as HVD if visceral metastases were present and/or ≥4 bone lesions with ≥1 lesion beyond the vertebral bodies and pelvis. Overall survival (OS) and cancer-specific survival were investigated based on the disease burden. The Cox proportional hazards regression model was used to evaluate the prognostic factors. Results: About 50.7% patients were classified as low-volume disease (LVD) and 49.3% were HVD at diagnosis. The medians of OS and cancer-specific survival were 64 and 116 months, respectively, for patients with LVD and 26 and 46 months, respectively, for men with HVD (both P < 0.001). Among patients with HVD, 76.6% had both high-volume bone disease (HBD) (≥4 bone metastases) and appendicular bone involvement. There was no significant difference in both OS and cancer-specific survival between patients with visceral metastases and those with HBD combined with appendicular bone involvement. In the multivariable analysis, presence of Gleason score ≥8, HBD, or HVD may predict poorer OS and cancer-specific survival outcomes (all P < 0.05). Conclusions: Asian patients with high-volume metastatic prostate cancer had a larger proportion of HBD with appendicular bone involvement, who had a comparably poor prognosis to those with visceral metastases. Patients with HBD or HVD had reduced survival outcomes.


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