Dominant intraprostatic cancer confirmed by direct MRI-guided biopsy: Concordance with histopathological findings

Nicholas P. Meermeier, Kevin R. Turner, Bryan R. Foster, Csanád Várallyay, Jen Jane Liu, Fergus V. Coakley

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Purpose: To investigate the concordance between dominant intraprostatic cancer seen on endorectal multiparametric MRI and confirmed by MRI-targeted biopsy with histopathological findings at radical prostatectomy, since existing literature has emphasized the miss rather than the concordance rate of MRI. Materials and methods: We retrospectively identified 20 patients who underwent radical prostatectomy after a dominant intraprostatic cancer focus was identified at endorectal multiparametric MRI and confirmed by MRI-targeted biopsy. Concordance was determined by comparing the location and Gleason grade group of dominant tumor at MRI with the location and Gleason grade group determined at histopathological review. Results: Mean patient age was 65 years (range, 48 to 76) and median serum prostatic specific antigen level was 9.4 ng/mL (range, 4.6 to 58.0). In all 20 patients, the location of dominant tumor based on MRI and targeted biopsy corresponded with the dominant tumor location at histopathology. In 9 patients, Gleason grade group was the same at targeted biopsy and final histopathology. In 9 patients, final Gleason grade group was higher and in two patients it was lower. Conclusion: Our preliminary results suggest dominant tumor as determined by endorectal multiparametric MRI and confirmed by a positive MRI-targeted biopsy has high concordance with histopathological findings at radical prostatectomy for location, and reasonable concordance for Gleason grade group.

Original languageEnglish (US)
Pages (from-to)273-278
Number of pages6
JournalClinical Imaging
Volume51
DOIs
StatePublished - Sep 1 2018

Keywords

  • MRI
  • MRI targeted biopsy
  • Prostate cancer

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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