Transrectal high-intensity focused ultrasound in the treatment of localized prostate cancer: A multicenter study

Toyoaki Uchida, Shiro Baba, Akira Irie, Shigehiro Soh, Naoya Masumori, Taiji Tsukamoto, Hiroomi Nakatsu, Hiroyuki Fujimoto, Tadao Kakizoe, Takeshi Ueda, Tomohiko Ichikawa, Nobutaka Ohta, Tadaichi Kitamura, Makoto Sumitomo, Masamichi Hayakawa, Teiichiro Aoyagi, Masaaki Tachibana, Ryusuke Ikeda, Kohji Suzuki, Nobuo TsuruKazuo Suzuki, Seiichiro Ozono, Kiyohide Fujimoto, Yoshihiko Hirao, Kohichi Monden, Yasutomo Nasu, Hiromi Kumon, Kazuhiko Nishi, Shoichi Ueda, Hirofumi Koga, Seiji Naitoh

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

We report a multicenter trial with transrectal high-intensity focused ultrasound (HIFU) in the treatment of localized prostate cancer. A total of 72 consecutive patients with stage Tlc-2NOMO prostate cancer were treated using the Sonablate 500™ HIFU device (Focus Surgery, Indianapolis, USA). Biochemical recurrence was defined according to the criteria recommended by the American Society for Therapeutic Radiology and Oncology Consensus Panel. The median age and prostate specific antigen (PSA) level were 72 years and 8.10 ng/ml, respectively. The median follow-up period for all patients was 14.0 months. Biochemical disease-free survival rates in all patients at 1 and 2 years were 78% and 76%, respectively. Biochemical disease-free survival rates in patients with stage Tie, T2a and T2b groups at 2 years were 89, 67% and 40% (p = 0.0817). Biochemical disease-free survival rates in patients with Gleason scores of 2-4, 5-7 and 8-10 at 2 years were 88, 72% and 80% (p = 0.6539). Biochemical disease-free survival rates in patients with serum PSA of less than 10 ng/ml and 10-20 ng/ml were 75% and 78% (p = 0.6152). No viable tumor cells were noted in 68% of patients by postoperative prostate needle biopsy. Prostatic volume was decreased from 24.2 ml to 14.0 ml at 6 months after HIFU (p<0.01). No statistically significant differences were noted in International Prostate Symptom Score, maximum urinary flow rate and quality of life analysis with Functional Assessment of Cancer Therapy. HIFU therapy appears to be minimally invasive, efficacious and safe for patients with localized prostate cancer with pretreatment PSA levels less than 20 ng/ml.

Original languageEnglish
Pages (from-to)651-658
Number of pages8
JournalActa Urologica Japonica
Volume51
Issue number10
Publication statusPublished - Oct 2005

Keywords

  • High-intensity focused ultrasound
  • Minimally invasive surgery
  • Prostate cancer

ASJC Scopus subject areas

  • Urology

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