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  • Title: 10-year survival and quality of life in patients with high-risk pN0 prostate cancer following definitive radiotherapy.
    Author: Berg A, Lilleby W, Bruland OS, Fosså SD.
    Journal: Int J Radiat Oncol Biol Phys; 2007 Nov 15; 69(4):1074-83. PubMed ID: 17703896.
    Abstract:
    PURPOSE: To evaluate long-term overall survival (OS), cancer-specific survival (CSS), clinical progression-free survival (cPFS), and health-related quality of life (HRQoL) following definitive radiotherapy (RT) given to T(1-4p)N(0)M(0) prostate cancer patients provided by a single institution between 1989 and 1996. METHODS AND MATERIALS: We assessed outcome among 203 patients who had completed three-dimensional conformal RT (66 Gy) without hormone treatment and in whom staging by lymphadenectomy had been performed. OS was compared with an age-matched control group from the general population. A cross-sectional, self-report survey of HRQoL was performed among surviving patients. RESULTS: Median observation time was 10 years (range, 1-16 years). Eighty-one percent had high-risk tumors defined as T(3-4) or Gleason score (GS) > or =7B (4+3). Among these, 10-year OS, CSS, and cPFS rates were 52%, 66%, and 39%, respectively. The corresponding fractions in low-risk patients (T(1-2) and GS < or =7A [3+4]) were 79%, 95%, and 73%, respectively. Both CSS and cPFS were predicted by GS and T-classification; OS was associated with GS only. High-risk, but not low-risk, patients had reduced OS compared with the general population (p < 0.0005). When pelvis-related side effects were included in multivariate analyzes together with physical function and pain, sexual, urinary, and bowel function were not independently associated with self-reported global quality of life. CONCLUSIONS: Despite surgically proven (p)N(0), RT with dosage <70 Gy as monotherapy does not give satisfactory CSS rates after 10 years in patients with T(3-4) or GS > or =7B.
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