Purpose: The purpose of this study was to investigate the value of hypoechoic lesions on transrectal ultrasound (TRUS) as a prognostic factor for patients with localized prostate cancer.
Materials And Methods: The patients consisted of 71 patients with pT2N0M0 disease following radical prostatectomy between 2002 and 2008. The group with hypoechoic lesions was labeled group 1, whereas the group without hypoechoic lesions was labeled group 2. The presence of hypoechoic lesions on preoperative TRUS was analyzed as a prognostic factor along with several parameters, including preoperative factors and pathologic factors. The biochemical progression-free survival (BPFS) rate was compared between the two groups according to the presence of hypoechoic lesions on TRUS.
Results: A total of 35 patients had hypoechoic lesions on TRUS, whereas 36 had no hypoechoic lesions. Preoperative baseline characteristics were not significantly different between the two groups. In the univariate analysis, BPFS showed significant differences according to the presence of hypoechoic lesions on TRUS and the preoperative prostate-specific antigen level. The BPFS rates over the first 24 months were 97.0% in group 1 and 97.1% in group 2; however, the difference in the BPFS rate over 48 months significantly widened to 75.3% compared with 91.7%, respectively. Despite this finding, no significant independent prognostic factor for BPFS was found on multivariate analysis in this patient cohort.
Conclusions: The presence of hypoechoic lesions on TRUS may suggest worse prognostic characteristics in pT2 prostate cancer. Further studies involving larger subject populations are needed to corroborate the significance of the presence of hypoechoic lesions as a prognostic factor.
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| http://dx.doi.org/10.4111/kju.2013.54.1.11 | DOI Listing |
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