Diffusion Restriction Comparison between Gleason 4 Fused Glands and Cribriform Glands within Patient Using...

Area of Science:

• Urologic Oncology
• Radiology
• Digital Pathology

Background:

• Cribriform patterned Gleason 4 (G4) glands indicate poor prognosis after prostatectomy.
• Accurate identification of G4 gland morphology is crucial for treatment planning.

Purpose of the Study:

• To evaluate diffusion differences in Gleason 4 (G4) gland morphology using multiparametric magnetic resonance imaging (MP-MRI).
• To correlate MP-MRI findings with whole-mount prostate histology in patients undergoing radical prostatectomy.

Main Methods:

• MP-MRI was performed on 48 patients prior to prostatectomy.
• Whole-mount prostate histology was analyzed and co-registered with pre-operative T2-weighted MRI.
• Linear mixed models analyzed diffusion data from G4 cribriform glands (G4CG) and G4 fused glands (G4FG).

Main Results:

• Gleason 4 cribriform glands demonstrated significantly greater diffusion restriction compared to fused glands.
• MP-MRI effectively differentiated between G4CG and G4FG morphologies based on diffusion properties.

Conclusions:

• MP-MRI can distinguish between different Gleason 4 gland patterns, specifically cribriform versus fused glands.
• Diffusion-weighted imaging may offer a non-invasive method to assess the extent of aggressive G4 patterns in prostate cancer.