alexa Primary Gleason Pattern Does Not Affect Recurrence-Free
ISSN: 2155-9619

Journal of Nuclear Medicine & Radiation Therapy
Open Access

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Research Article

Primary Gleason Pattern Does Not Affect Recurrence-Free Survival in Patients Receiving Radiotherapy for Prostate Cancer

Tadahiko Kikugawa1*, Nozomu Tanji1, Noriyoshi Miura1, Takashi Ochi1, Atsushi Nishikawa1, Yuki Miyauchi1, Takeshi Sato2, Hitoshi Hamada3, Atsushi Matsumoto4, and Masayoshi Yokoyama1

1 Department of Urology and Department of Therapeutic Radiology, Ehime University Graduate School of Medicine, Ehime, Japan

2 Department of Urology, Ohzu city Hospital, Ehime, Japan

3 Department of Urology, Ehime Prefectural Imabari Hospital, Ehime, Japan

4 Department of Urology, Houshasen-Daiichi Hospital, Ehime, Japan

*Corresponding Author:
Tadahiko Kikugawa
Department of Urology
Ehime University Graduate School of Medicine Shitsukawa
Toon, Ehime 791-0295, Japan
Tel: +81-89-960-5356
E-mail:[email protected]

Received date: June 10, 2014; Accepted date: July 18, 2014; Published date: July 31, 2014

Citation: Kikugawa T, Tanji N, Miura N, Ochi T, Nishikawa A, et al. (2014) Primary Gleason Pattern Does Not Affect Recurrence-Free Survival in Patients Receiving Radiotherapy for Prostate Cancer. J Nucl Med Radiat Ther 5:186. doi: 10.4172/2155-9619.1000186

Copyright: © 2014 Kikugawa T, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Objective: To evaluate biochemical recurrence-free survival (b-RFS) in patients with Gleason score 7 prostate cancers treated with external beam radiotherapy at Ehime University Hospital. Materials and Methods: Between January 2003 and October 2009, 63 patients with Gleason score 7 prostate cancers were treated with three-dimensional conformal radiotherapy (3D-CRT) at our institute. Of the 63 patients analyzed, 41 and 22 had a primary Gleason pattern of 3 and 4 carcinoma, respectively. Neoadjuvant hormonal therapy had been given to 37 patients (59%) for 6 months prior to radiotherapy. The American Society for Therapeutic Radiology and Oncology Phoenix consensus definition was used to determine the b-RFS after treatment. Results: The overall b-RFS rate at 5 year was 71% and 77% for Gleason score 3+4 and 4+3 prostate cancer, respectively. The overall b-RFS at 5 year was 59% and 86% in Gleason score 3+4 patients with and without neoadjuvant hormonal therapy for 6 months, respectively. Conclusions: Our results indicate that the 5 year b-RFS outcome with 3D-CRT is not dependent on Gleason score 3+4 versus 4+3 histological features, or on neoadjuvant hormonal therapy for 6 months in patients with a Gleason score of 3+4.


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