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Are prostate biopsies mandatory in patients with prostate‐specific antigen increase during intravesical immuno‐ or chemotherapy for superficial bladder cancer?
Author(s) -
Beltrami Paolo,
Ruggera Lorenzo,
Cazzoletti Lucia,
Schiavone Dionisio,
Zattoni Filiberto
Publication year - 2008
Publication title -
the prostate
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.295
H-Index - 123
eISSN - 1097-0045
pISSN - 0270-4137
DOI - 10.1002/pros.20790
Subject(s) - medicine , prostate cancer , prostate , urology , chemotherapy , prostate specific antigen , immunotherapy , cancer , oncology
Background Aim of this study was to evaluate if there was a significant association between intravesical immuno‐ or chemotherapy and the increase of PSA serum level. It could be important to avoid useless prostate biopsies. Methods PSA values were determined in 106 male patients who had undergone intravesical immuno‐ (77 cases) or chemotherapy (29 cases) from 2001 to 2005. Blood samples were obtained before and after the induction course of instillation therapy and at 3, 6, and 12 months during the maintenance course. Results 41.6% of patients at the end of the BCG induction course and 45.5% at 3 months from the beginning of the immunotherapy showed a clinically and statistically significant increase of PSA that returned to the baseline levels within 12 months. Prostate biopsies, performed in 10 patients during BCG therapy, showed inflammatory pictures in 9 cases and a prostate cancer in 1 patient with persistently elevated PSA at 12 months. In 1 case a prostate cancer was histologically found following radical cistectomy for disease progression. A statistically but not clinically significant difference of PSA level was registered in patients treated with chemotherapy. Conclusions Our results confirm that a statistically and clinically significant PSA increase is registered during immunotherapy but not during chemotherapy. PSA elevation in patients treated with intravesical BCG is self‐limited and prostate biopsies are not mandatory in these patients and could be delayed at 12 months, while monitoring PSA. On the other side, prostate biopsies are mandatory in patients with PSA abnormal elevation during chemotherapy. Prostate 68: 1241–1247, 2008. © 2008 Wiley‐Liss, Inc.