TITLE:
Single Positive Core Prostate Cancer Has Less Aggressive Pathologic Features than Multiple Positive Core Prostate Cancer but Should It Still Be Considered an Indolent Tumor?
AUTHORS:
Ricardo Kupka, Marcos Francisco Dall’Oglio, Alexandre Crippa, José Pontes, Aguinel José Bastian Júnior, Luís Felipe Piovesan, Willian Nahas, Miguel Srougi
KEYWORDS:
Prostate Cancer, Active Surveillance, Radical Prostatectomy, Prostate Biopsy
JOURNAL NAME:
Open Journal of Urology,
Vol.4 No.6,
June
17,
2014
ABSTRACT: Introduction: A single positive core (SPC) in a
prostate biopsy is usually associated with indolent prostate cancer (PCa), and
is considered one active surveillance criteria. To determine if a SPC should
qualify a patient for surveillance, we compared the pathological findings for
SPC and multiple positive core in a matched population who underwent radical
prostatectomy (RP). Material and Methods: We evaluated 373 SPC patients who
underwent RP (Group 1) and 375 consecutive cases with multiple positive core
(Group 2) who were matched according to age, prostate weight, PSA level and
clinical stage. In addition to preoperative data and epidemiological
characteristics, we compared the rates of positive surgical margins (PSMs),
extraprostatic extension (EPE) and seminal vesicle invasion (SVI) according to
the Gleason scores (GSs) of the biopsies. Results: Both groups were similar
according age, PSA level, prostate weight and clinical stage. Group 1 had a
lower PSM rate (20.9% vs 37.6%, p