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3D mapping biopsy finds 3x prostate cancer of ultrasound-guided biopsy
Date:2/4/2014

ifically, after first biopsy, 7.5 percent of patients had been graded Gleason 7 the lowest grade at which treatment is considered "medium risk" and for which treatment is a reasonable option and after second biopsy the percentage increased to twenty-five. After first biopsy, no patients had been scored above Gleason 7, and after 3D mapping biopsy, 4 percent were found to have Gleason 8, and 2 percent had Gleason 9.

"But we already knew that 3D mapping was likely to upgrade a prostate cancer's Gleason score," Barqawi says. "What we hoped to discover in this study is exactly where cancer is being missed by ultrasound-guided biopsy."

Of these 161 total cases, cancer was found in the left-mid section of the prostate 62 times after it had been missed by ultrasound-guided biopsy. Likewise, 3D mapping found 62 unreported cancers in the right-mid section and 41 undetected cancers in the left-apex zone.

"This study adds to our knowledge about the interface and best uses of these two techniques. The cost and invasiveness of 3d mapping biopsy make it inappropriate for screening, but our message is that with the confirmation or strong suspicion of cancer, 3D mapping biopsy offers a much more accurate assessment of the location, stage and risk," Barqawi says.


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Contact: Garth Sundem
garth.sundem@ucdenver.edu
University of Colorado Denver
Source:Eurekalert

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