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Updated: May 2, 2026

Use of Magnetic Resonance Imaging and Biopsy Data to Guide Sampling Procedures for Prostate Cancer Biobanking
Published on: October 10, 2019
To Investigate Disparities in Strategies for Low-Risk Prostate Cancer by Facility Type Using the Japan Study Group of
Satoshi Kobayashi1, Masaki Shiota1, Mizuki Onozawa2
1Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Treatment for low-risk prostate cancer varies by medical institution type in Japan. Imaging scans were similar, but active surveillance and treatments like radiation or hormone therapy differed significantly between clinics, community hospitals, and university hospitals.
Area of Science:
- Urology
- Oncology
- Medical Informatics
Background:
- Low-risk prostate cancer management requires understanding institutional practice variations.
- Systematic investigation into imaging and treatment disparities is crucial.
Purpose of the Study:
- To investigate disparities in imaging inspections and first-line treatment for low-risk prostate cancer based on medical institution type.
- Utilize the Japan Study Group of Prostate Cancer database for analysis.
Main Methods:
- Analysis of nationwide data from the Japan Study Group of Prostate Cancer (2016-2018).
- Comparison of patient/tumor characteristics, diagnostic imaging, and initial treatments across clinics, community hospitals, and university hospitals.
- Statistical comparison of selected parameters.
Main Results:
- No significant differences in computed tomography, bone scintigraphy, or MRI utilization.
- Active surveillance was less frequent in clinics and university hospitals compared to community hospitals.
- Androgen deprivation therapy was more common in clinics, while curative treatments were less frequent. University hospitals showed more curative radiation but less androgen deprivation therapy.
Conclusions:
- Significant differences exist in first-line treatment strategies for low-risk prostate cancer based on the type of medical institution in Japan.
- Findings highlight the need for standardized care guidelines across different healthcare settings.
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