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

Ultrasound-guided biopsies miss prostate cancers that are detected by the slightly more expensive and slightly more invasive 3D mapping biopsies. For example, in a 2006 study of 180 men diagnosed with early stage prostate cancer via ultrasound-guided biopsy, nearly a quarter were upgraded to a more clinically significant stage of disease after 3D mapping biopsy found pockets of cancer the first technique had missed. Now, a University of Colorado Cancer Center study reports the locations of these most-missed pockets of prostate cancer.

"There are three major reason we perform these 3D mapping biopsies in the clinic: first, a man may have rising PSA despite a series of negative biopsies and so want a more detailed opinion; second, a man may prefer additional reassurance that watching and waiting rather than treatment is the best course of action; and third, a man may pursue focal therapy in which only the cancerous sections of the prostate are removed and so need accurate information on the position of his cancer," says Al Barqawi, MD, investigator at the CU Cancer Center, associate professor at the CU School of Medicine, and the paper's senior author. Barqawi is a pioneer of the 3D mapping biopsy technique, in which needle biopsies are taken 5mm apart across the x, y and z axes of a three-dimensional grid through the prostate, and has performed over 600 of the procedures.

The current study enrolled 161 men with a mean age of 61.6 years, who had been diagnosed with low-stage prostate cancer by ultrasound-guided biopsy. The study performed 3D mapping biopsies at a mean 192 days after the first and compared the results. Overall, ultrasound-guided biopsy found an average of 1.38 cancerous zones per patient, whereas 3D mapping biopsy found nearly three times the number of positive zones, at 3.33 per patient.

The follow-up findings from the 3D mapping study resulted in upgrading the severity of many of these seemingly low-grade cancers. Specifically, 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.


'/>"/>

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

Related medicine news :

1. Mapping the brain to understand cultural differences
2. TGen-TD2-Scottsdale Healthcare breast cancer pilot study shows value of proteomic mapping
3. A fundamental problem for brain mapping
4. Robotic ultrasound gives surgeon more direct control in mapping and removing kidney cancers
5. Surrey Doctor Uses Ultrasound Mapping to Identify and Clear Leg Veins
6. UT Arlington physicists tool has potential for brain mapping
7. First Complete Mapping of the Alzheimer’s Genome Underway
8. Non-invasive mapping helps to localize language centers before brain surgery
9. Obama Unveils Vast Brain-Mapping Project
10. Personalized brain mapping technique preserves function following brain tumor surgery
11. Researchers decode biology of blood and iron disorders mapping out novel future therapies
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... ... 2016 , ... A revolution is underway. Brooklyn-based company, ... for the millions of people who require these medical transport services annually. ... the use of technology. Now, SmartEMS has put forth an industry-changing app that ...
(Date:6/26/2016)... ... , ... PawPaws brand pet supplements owned by Whole Health Supply ... health of felines. The formula is all-natural and is made from Chinese herbs that ... Cat Kidney Support Supplement Soft Chews are Astragalus Root Extract and Rehmannia Root ...
(Date:6/25/2016)... ... June 25, 2016 , ... The temporary closing of Bruton Memorial Library on June 21 ... brings up a new, often overlooked aspect of head lice: the parasite’s ability to live ... not a common occurrence, but a necessary one in the event that lice have simply ...
(Date:6/25/2016)... ... ... On Friday, June 10, Van Mitchell, Secretary of the Maryland Department of ... recognition of their exemplary accomplishments in worksite health promotion. , The Wellness at Work ... Symposium at the BWI Marriott in Linthicum Heights. iHire was one of 42 businesses ...
(Date:6/24/2016)... ... ... Marcy was in a crisis. Her son James, eight, was out of control. Prone to ... , “When something upset him, he couldn’t control his emotions,” remembers Marcy. “If there ... my other children and say he was going to kill them. If we were ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... ANGELES , June 23, 2016 ... CAPR ), a biotechnology company focused ... therapeutics, today announced that patient enrollment in its ... in Duchenne) has exceeded 50% of its 24-patient ... enrollment in the third quarter of 2016, and ...
(Date:6/23/2016)... Ill. and INDIANAPOLIS , ... students receiving a Lilly Diabetes Tomorrow,s Leaders Scholarship is ... 2016 scholarship winners, announced today online at www.diabetesscholars.org ... let type 1 diabetes stand in the way of ... has supported the Foundation,s scholarship program since 2012, and ...
(Date:6/23/2016)... 2016 The vast majority of dialysis patients ... Treatments are usually 3 times a week, with treatment ... travel time, equipment preparation and wait time.  This regimen ... for patients who are elderly and frail.  Many elderly ... rehabilitation centers for some duration of time. ...
Breaking Medicine Technology: