PURPOSE:To improve the detection of prostate cancer, especially in pre-biopsied patients, a guided biopsy based on radiologic findings is an option.
We addressed the question, whether the combination of multiparametric MRI and computerized transrectal ultrasound (C-TRUS) improves the detection of prostate cancer.
METHODS:Twenty patients suspicious of having prostate cancer were included. Seventeen patients were pre-biopsied once or more. Each patient was examined by multiparametric MRI and C-TRUS, followed by a guided transrectal prostate biopsy series. Patients were stratified in a "low-risk" and "high-risk" group. The results were analyzed using descriptive statistics.
RESULTS:In 58 % (11 pat.) of patients, prostate cancer was found. In the "high-risk" group, biopsy in 73 % (8 pat.) of patients was positive for prostate cancer. All prostate cancer patients were found by C-TRUS-guided biopsies, whereas MRI did not reveal cancer in 27 %. 72 % (8 pat.) of patients had undergone radical prostatectomy. 65 % (6 pat.) had higher tumor stages after prostatectomy and 62.5 % (5 pat.) had higher Gleason-score.
CONCLUSIONS: Combination of multiparametric MRI and C-TRUS seems to improve detection of prostate cancer, especially in high-risk patients. Detection rates of C-TRUS in this study could confirm those of the primary C-TRUS studies. The benefit of MRI is the additional visualization of the tumor extension. The technique is an option for pre-biopsied patients. Both imaging methods often fail to predict correct tumor stage, but further studies are necessary.
Written by:
Strunk T, Decker G, Willinek W, Mueller SC, Rogenhofer S. Are you the author?
Universitaetsklinikum Bonn, Bonn, Germany.
Reference: World J Urol. 2012 Aug 12. Epub ahead of print.
doi: 10.1007/s00345-012-0924-z
PubMed Abstract
PMID: 22885659
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