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Percentage of Gleason pattern 4 and 5 predicts survival after radical prostatectomy
Article first published online: 6 SEP 2007
Copyright © 2007 American Cancer Society
Volume 110, Issue 9, pages 1967–1972, 1 November 2007
How to Cite
Cheng, L., Davidson, D. D., Lin, H. and Koch, M. O. (2007), Percentage of Gleason pattern 4 and 5 predicts survival after radical prostatectomy. Cancer, 110: 1967–1972. doi: 10.1002/cncr.23004
- Issue published online: 18 OCT 2007
- Article first published online: 6 SEP 2007
- Manuscript Accepted: 5 JUN 2007
- Manuscript Revised: 24 MAY 2007
- Manuscript Received: 9 MAR 2007
- prostatic neoplasm;
- radical prostatectomy;
- biochemical recurrence;
- Gleason grading;
- percent Gleason pattern 4/5;
- tertiary pattern;
- high-grade cancer;
- tumor volume;
Morphologic and clinical heterogeneity within tumor grades is well recognized in prostate cancer. The objective of the current study was to determine whether the combined percentage of Gleason patterns 4 and 5 in radical prostatectomy specimens is an independent predictor of cancer-specific survival in prostate cancer patients.
The radical prostatectomy specimens were analyzed from 504 consecutive prostate cancer patients who were treated at Indiana University Medical Center between 1990 and 1998. Various clinical and pathologic characteristics were analyzed.
A higher combined percentage of Gleason patterns 4 and 5 was associated with older age, higher preoperative serum prostate-specific antigen level, higher pathologic stage, positive surgical margins, extraprostatic extension of tumor, higher Gleason score, perineural invasion, and lymph node metastasis. In the multivariate Cox regression model, the combined percentage of Gleason patterns 4 and 5 was found to be an independent predictor of cancer-specific survival (P = .04).
The combined percentage of Gleason patterns 4 and 5 is a powerful predictor of prostate cancer-specific survival. Assessment of high-grade cancer amounts may allow for better stratification of patients into appropriate prognostic groups and treatment protocols. Cancer 2007. © 2007 American Cancer Society.