Abstract
Purpose
We want to investigate whether MR-US fusion can improve the detection rates of clinically
significant prostate cancer in patients with prior negative prostate biopsy with PSA
level <10 ng/mL.
Methods
Thirty nine patients who had previous a history of negative prostate biopsy and PSA
levels <10 ng/mL were included in this study. MR was performed before the biopsy and
graded using PIRADS V2. We labeled patients with index lesions with PIRADS scores
of 3 or above as the MR-positive group, while patients with PIRADS scores of 1 or
2 were the MR-negative group. Two cores of added biopsy (AB) were performed per each
index lesion under MR-US fusion. Twelve cores randomized systematic biopsy (SB) were
followed. In MR negative group, two cores of AB were obtained in transition zone,
followed by SB. Overall cancer and clinically significant cancer detection rates by
patients and by cores were analyzed, and compared between MR-positive and negative
group.
Results
The overall cancer detection rates were 51.3% by patient based and 13.8% by core based.
While all of AB positive cancer patients were clinically significant cancer patients,
five out of seven (71.4%) AB negative cancer patients were clinically insignificant
cancer patients. AB results turned another four cancer patients from insignificant
to significant cancer. The cancer detection rates between MR-positive and negative
group were statistically significant.
Conclusions
Additional biopsy using MR–US fusion showed improved detection of clinically significant
prostate cancer.
Keywords
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Article Info
Publication History
Published online: September 22, 2018
Accepted:
September 18,
2018
Received in revised form:
September 6,
2018
Received:
April 17,
2018
Footnotes
☆This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( NRF-2013R1A1A2011398 ).
Identification
Copyright
© 2018 Elsevier Inc. All rights reserved.

