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A Cognitive Fusion-guided Prostate Biopsy Using Multiparametric Magnetic Resonance Imaging and Transrectal Ultrasound
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Prostate MR: pitfalls and benign lesions.

Aritrick Chatterjee1, Stephen Thomas1, Aytekin Oto2

  • 1Department of Radiology, University of Chicago, 5841 South Maryland Avenue, Chicago, IL, 60637, USA.

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|November 10, 2019
PubMed
Summary
This summary is machine-generated.

Multiparametric MRI (mpMRI) aids prostate cancer detection but can be mimicked by normal anatomy and benign conditions. Understanding these mimics and technical pitfalls is crucial for accurate interpretation.

Keywords:
Benign lesionsDWIPitfallsProstate cancermpMRI

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Area of Science:

  • Radiology
  • Urologic Oncology

Background:

  • Multiparametric MRI (mpMRI) is vital for prostate cancer diagnosis, risk stratification, staging, and targeted biopsies.
  • Anatomical structures and benign conditions can mimic prostate cancer on mpMRI, potentially leading to misdiagnosis.
  • Technical challenges can also limit the efficacy of mpMRI in prostate cancer assessment.

Purpose of the Study:

  • To review common anatomical pitfalls and benign conditions that mimic prostate cancer on mpMRI.
  • To discuss technical challenges and other factors that can limit mpMRI efficacy.
  • To provide guidance for radiologists in interpreting mpMRI findings accurately.

Main Methods:

  • Review of anatomical structures mimicking prostate cancer (anterior fibromuscular stroma, central zone, venous plexus, capsule).
  • Discussion of benign conditions mimicking prostate cancer (hemorrhage, prostatitis, atrophy, BPH nodules, calcifications).
  • Analysis of technical challenges (image distortion, motion artifacts, coil placement).

Main Results:

  • Identified specific anatomical mimics including anterior fibromuscular stroma, normal central zone, periprostatic venous plexus, and thickened surgical capsule.
  • Detailed common benign conditions like post-biopsy hemorrhage, prostatitis, focal atrophy, BPH nodules, and calcifications as mimics.
  • Highlighted technical pitfalls such as image distortion, motion artifacts, and endorectal coil issues.

Conclusions:

  • Accurate interpretation of prostate mpMRI requires thorough knowledge of normal anatomy and potential mimics.
  • Radiologists must be aware of benign conditions and technical challenges to avoid misinterpreting mpMRI findings.
  • Familiarity with these pitfalls is critical for reliable diagnosis, staging, and treatment targeting of prostate cancer.