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- W2004197901 abstract "The temporary implantation of iridium-192 (Ir-192) is available in Japan if the patient is isolated in a radiation control area during the treatment. In this study, brachytherapy for prostate cancer was preceded by using low-dose rate Ir-192. Twenty-six patients with localized prostate cancer were treated with brachytherapy since December 1997. The age of patients ranged from 61 to 82 (median 76) years and the initial serum prostate-specific antigen (PSA) level ranged from 4.3 to 141 (median 17.4) ng/ml. Ten to 14 needles with Teflon sheaths were introduced into the prostate via a transperineal approach and an Ir-192 wire was placed in each sheath. The dose-distribution curve based on computed tomography imaging was drawn and the irradiation time was calculated for the whole prostate to receive over 70 Gy. During the 1-22-month follow-up period, all cases with an initial PSA level of less than 25 ng/ml showed continuous PSA decrease without biochemical failure. Magnetic resonance imaging demonstrated tumor regression in all cases within 6 months after the treatment. One-year biopsy specimens from patients with PSA failure demonstrated viable tumor cells, and the specimens from patients with favorable progress revealed fibrosis replacement without any variable tumor cells. Characterization of nocturnal penile tumescence data and IIEF 15 score proved the minimal effect of the treatment on erectile function. No major side effects or complications were observed. Brachytherapy using Ir-192 is a less invasive and safe procedure, which is expected to become a standard treatment for localized prostate cancer patients with relatively low PSA levels." @default.
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- W2004197901 date "2001-07-01" @default.
- W2004197901 modified "2023-10-16" @default.
- W2004197901 title "Brachytherapy for prostate cancer in Japan" @default.
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- W2004197901 doi "https://doi.org/10.1046/j.1442-2042.2001.00330.x" @default.
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