The clinical significance of prostatic hypoechoic lesions on ultrasonography / 临床外科杂志

ABSTRACT

Objective To evaluate the clinical significance of prostatic hypoechoic lesions on transrectal ultrasound(TRUS) for prostate cancer detection Methods 438 patients referred to our hospital between August 1999 and August 2006 for biopsy of the prostate.Every patient received 6～13 biopsy cores of the prostate.If a hypoechoic was identified,the biopsy was taken from this lesion.Correlation between hypoechoic lesions,isoechoic areas and cancer detection for each core was performed.Results Among 438 patients,cancer was detected in 112(25.6%) patients.Hypoechoic lesions were seen in 75(67%)patients with prostate cancer,the isoechoic areas in 37(33%).A total of 3504 biopsy cores were obtained from 438 patients.Among them,636 biopsy cores were taken from hypoechoic lesions.163(25.6%)biopsy cores taken from hypoechoic lesions harbored cancer and 473(74.4%) had no cancer.The cancer detection rate was similar in patients with hypoechoic lesions on TRUS or not,25.4%(75/298)and 26.4%(37/140)respectively.The difference was not statistically significant(P