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Targeted prostate biopsy has potential to improve diagnosis of prostate cancer
Date:12/10/2012

New York, NY, December 10, 2012 Diagnosis of prostate cancer remains imperfect. Current methods of prostate biopsy are limited by over detection of slow-growing tumors and under detection of clinically relevant cancers. Investigators at the University of California-Los Angeles Department of Urology have found that a new technique of targeted biopsy in a clinic setting, using local anesthesia, may improve diagnosis and aid in selecting which patients are suitable for active surveillance and which need focal therapy (noninvasive techniques for destroying small tumors within the prostate). Their results are published in The Journal of Urology.

"The technology exists to biopsy prostate tumors under magnetic resonance imaging (MRI) guidance and this has been shown to improve prostate cancer diagnosis," says first author Geoffrey Sonn, MD, Department of Urology, Institute of Urologic Oncology, University of California-Los Angeles. "But such procedures are time-consuming, costly, and impractical in most settings. Magnetic resonance ultrasound (MR-US) systems that fuse stored MR images with real-time ultrasound combine the resolution of MRI with the ease and practicality of ultrasound, offering a savings in time and cost, while potentially retaining the accuracy of MR-guided biopsy. However there are further limiting factors the need for monitored anesthesia care, or a transperineal approach and general anesthesia."

Investigators report on the findings in a group of men who underwent MR-US fusion biopsy as outpatients at the UCLA Clark Urology Center. Of the 171 men in the study, 106 underwent biopsy for surveillance, while 65 had an increased prostate specific antigen (PSA) level but previously negative biopsies. All had a median PSA of 4.9 ng/ml and a median prostate size of 48 cc. Following a procedure lasting about 20 minutes, none of the patients required hospitalization.

The researchers found that a targeted biopsy was three t
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Contact: Linda Gruner
jumedia@elsevier.com
212-633-3923
Elsevier Health Sciences
Source:Eurekalert

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