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Radical external beam radiotherapy for prostate cancer in Japan: results of the 1999-2001 patterns of care process survey.
- Source :
-
Japanese journal of clinical oncology [Jpn J Clin Oncol] 2006 Jan; Vol. 36 (1), pp. 40-5. Date of Electronic Publication: 2006 Jan 17. - Publication Year :
- 2006
-
Abstract
- Background: The Patterns of Care Study evaluated standards of practice for patients with clinically localized prostate cancer treated with radiotherapy in Japan. This study examined the influence of institutional stratification on care for patients receiving radical external beam radiotherapy.<br />Methods: A national survey of 66 institutions was conducted using two-stage cluster sampling, and detailed information was accumulated on 283 patients who received radiotherapy between 1999 and 2001.<br />Results: In A (academic) and B (non-academic) institutions, more than 80% of patients had intermediate or unfavorable risk disease. Although there were no significant differences in disease characteristics between A and B institutions, institutional stratification significantly affected radiotherapy practice patterns, such as the use of a CT-based treatment planning (A1: 91.5%, B: 77.1%; P = 0.0007) and the use of conformal therapy (A: 56.4%, B: 24.1%; P < 0.0001). CT-based treatment planning and conformal therapy significantly influenced total radiation dose (P < 0.0001 for each). Hormonal therapy was commonly used in both A and B institutions (A: 89.0%, B: 90.7%). Many patients with a favorable prognosis (A: 62.5%, B: 91.7%) received hormonal therapy, and most patients with unfavorable risk disease (A: 93.6%, B: 91.6%) also received hormonal therapy.<br />Conclusion: During the period 1999-2001, the majority of prostate cancer patients treated in Japan with radical external beam radiotherapy had advanced diseases. Institutional stratification significantly affected radiotherapy practice patterns, with the notable exception that radiotherapy was commonly combined with hormonal therapy regardless of the institutional stratification and individual risk.
- Subjects :
- Aged
Aged, 80 and over
Antineoplastic Agents, Hormonal therapeutic use
Combined Modality Therapy
Health Care Surveys
Humans
Institutional Management Teams statistics & numerical data
Male
Middle Aged
Practice Patterns, Physicians'
Prostatic Neoplasms drug therapy
Radiotherapy Dosage
Tomography, X-Ray Computed
Treatment Outcome
Prostatic Neoplasms radiotherapy
Radiotherapy Planning, Computer-Assisted statistics & numerical data
Radiotherapy, Conformal statistics & numerical data
Subjects
Details
- Language :
- English
- ISSN :
- 0368-2811
- Volume :
- 36
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Japanese journal of clinical oncology
- Publication Type :
- Academic Journal
- Accession number :
- 16418185
- Full Text :
- https://doi.org/10.1093/jjco/hyi216