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Published in: International Urology and Nephrology 4/2010

01-12-2010 | Urology – Original Paper

The impact of core biopsy fragmentation in prostate cancer

Authors: Leonardo Oliveira Reis, José Alberto Salvo Reinato, Daniel Carlos Silva, Wagner Eduardo Matheus, Fernandes Denardi, Ubirajara Ferreira

Published in: International Urology and Nephrology | Issue 4/2010

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Abstract

Objectives

Since accurate tumor localization and quantification are essential requisites avoiding prostate cancer overtreatment, we analyzed the impact of core fragmentation and the relation between core biopsy taken and pathological information in regard to cancer extension and aggressiveness (Gleason score).

Methods

One hundred and ninety-nine men submitted to trans-rectal prostate biopsy by the same urologist between October 2006 and October 2008 were included, and the number of cores obtained by biopsy compared to the number of cores examined by the same pathologist.

Results

Total core number obtained by biopsy was 21.54 (±3.56) compared to 24.08 (±4.77) examined by the pathologist, P < 0.01. Dividing prostate gland by areas such as base, mid and apical right and left, all areas showed statistically different core number between biopsy and pathological examination report (P < 0.01). Mean ratio of positive core cancer length was 0.41 (±0.12) and 0.32 (±0.8) comparing individual and overall cores analysis, respectively (P < 0.01). The mean Gleason score in the individual and overall cores analysis were 6.6 (6–9) and 6.3 (6–9), respectively, P < 0.01.

Conclusions

Considering the ongoing trend for earlier diagnosis of increasing numbers of younger men with low-risk prostate cancer, this study is original and demonstrates the possibility of core fragmentation, explaining in part over- and under-staging. One core per container and an overall Gleason score and percentage of adenocarcinoma for each container are encouraged.
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Metadata
Title
The impact of core biopsy fragmentation in prostate cancer
Authors
Leonardo Oliveira Reis
José Alberto Salvo Reinato
Daniel Carlos Silva
Wagner Eduardo Matheus
Fernandes Denardi
Ubirajara Ferreira
Publication date
01-12-2010
Publisher
Springer Netherlands
Published in
International Urology and Nephrology / Issue 4/2010
Print ISSN: 0301-1623
Electronic ISSN: 1573-2584
DOI
https://doi.org/10.1007/s11255-010-9720-0

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