Significance of Hypoechoic Lesion and Increased Blood Flow on Transrectal Ultrasound for Prostate Cancer Detection / 대한비뇨기과학회지

ABSTRACT

PURPOSE: A hypoechoic lesion is the most common finding of prostate cancer, but its diagnostic value is still an area of debate. The diagnostic significance of a hypoechoic lesion and the increased blood flow observed on transrectal ultrasonography (TRUS) were evaluated for the detection of prostate cancer. MATERIALS AND METHODS: The records of 266 patient's, between January 2003 and December 2005, were retrospectively reviewed. The cancer detection rates were compared according to the presence of a hypoechoic lesion in TRUS, and estimated with respect to stratification of the prostate- specific antigen (PSA) value and digital rectal examination (DRE) findings. RESULTS: The overall cancer detection rate was higher in the hypoechoic (40 of 101 cases, 39.6%) than in the isoechoic group (30 of 157 cases, 19.1%) (p10), the cancer detection rate apparently increased in those with a hypoechoic lesion in TRUS (10.3 vs. 0%, 25 vs. 13.6% and 68.2 vs. 31% respectively) (p0.05). CONCLISIONS The hypoechoic finding on TRUS not only supports the detection of prostate cancer, but also has independent diagnostic value. However, the findings of color Doppler are not helpful in the detection of prostate cancer.